Load data and create data frame

library(stringr)
data <- "data.txt"
lines <- readLines(data)
index <- !(1:length(lines)   %in% seq(1,length(lines),3) )
lines <- lines[index]
table <- data.frame()
for (i in 1:length(lines))
{ 
 line<-unlist(str_extract_all(lines[i], "[a-zA-Z0-9->:/(). ]{1,}\\|"))
 line<-str_replace_all(line,"\\|",'')
 
 line<-as.vector(line)
 if (i>1)
 {row<-t(as.data.frame(line))
 table<-rbind(table,row)
 }
 else
 {head <- line}
}
rownames(table) <- c()
names(table) <- head

Create data frame with name,state,number of total points and pre rating

name <-c()
state <-c()
pre_rating <- c()
total_points <-c()
average_pre_class_rating<-c()
for (i in seq(2,dim(table)[1],2))
{
  n<-unlist(str_extract_all(table[i,2],"[A-Z]{1,} [A-Z]{1,}"))[1]
  name <-c(name,n)
  state <- c(state,as.character(table[i+1,1]))
  pre_rating <-c(pre_rating,unlist(str_extract_all(table[i+1,2], '[0-9]+'))[2])
  total_points <-c(total_points,as.numeric(as.character(table[i,3])))
}
newtable<-data.frame(name,state,total_points,pre_rating)

Add average pre rating of opponents

for (i in seq(2,dim(table)[1],2))
{
  sum <- 0
  count <- 0
  for (j in 4:10)
  {
  competetor <- as.numeric(str_extract_all(table[i,j],"[0-9]+")) 
  if (! is.na(competetor))
    {
      sum<-sum+as.numeric(pre_rating[competetor])
      count <- count+1
    }
  }
  avg <- sum/count
  avg<-as.integer(avg)
  average_pre_class_rating<-c(average_pre_class_rating,avg) 
}
finaltable <- cbind(newtable,data.frame(average_pre_class_rating))
names(finaltable)<- c("Player's Name","Player's State","Total Number of Points","Player's Pre-Rating","Average Pre Chess Rating of Opponents")

Output to CSV

write.csv(finaltable,"output.csv",row.names=FALSE )
f<-read.csv("output.csv",sep = ',')
names(f)<-c("Player's Name","Player's State","Total Number of Points","Player's Pre-Rating","Average Pre Chess Rating of Opponents")
f
##           Player's Name Player's State Total Number of Points
## 1              GARY HUA            ON                     6.0
## 2       DAKSHESH DARURI            MI                     6.0
## 3          ADITYA BAJAJ            MI                     6.0
## 4             PATRICK H            MI                     5.5
## 5            HANSHI ZUO            MI                     5.5
## 6           HANSEN SONG            OH                     5.0
## 7              GARY DEE            MI                     5.0
## 8      EZEKIEL HOUGHTON            MI                     5.0
## 9           STEFANO LEE            ON                     5.0
## 10            ANVIT RAO            MI                     5.0
## 11      CAMERON WILLIAM            MI                     4.5
## 12            KENNETH J            MI                     4.5
## 13       TORRANCE HENRY            MI                     4.5
## 14         BRADLEY SHAW            MI                     4.5
## 15        ZACHARY JAMES            MI                     4.5
## 16         MIKE NIKITIN            MI                     4.0
## 17   RONALD GRZEGORCZYK            MI                     4.0
## 18        DAVID SUNDEEN            MI                     4.0
## 19         DIPANKAR ROY            MI                     4.0
## 20          JASON ZHENG            MI                     4.0
## 21            DINH DANG            ON                     4.0
## 22             EUGENE L            MI                     4.0
## 23             ALAN BUI            ON                     4.0
## 24            MICHAEL R            MI                     4.0
## 25     LOREN SCHWIEBERT            MI                     3.5
## 26              MAX ZHU            ON                     3.5
## 27       GAURAV GIDWANI            MI                     3.5
## 28          SOFIA ADINA            MI                     3.5
## 29     CHIEDOZIE OKORIE            MI                     3.5
## 30         GEORGE AVERY            ON                     3.5
## 31         RISHI SHETTY            MI                     3.5
## 32        JOSHUA PHILIP            ON                     3.5
## 33              JADE GE            MI                     3.5
## 34      MICHAEL JEFFERY            MI                     3.5
## 35         JOSHUA DAVID            MI                     3.5
## 36        SIDDHARTH JHA            MI                     3.5
## 37 AMIYATOSH PWNANANDAM            MI                     3.5
## 38            BRIAN LIU            MI                     3.0
## 39               JOEL R            MI                     3.0
## 40         FOREST ZHANG            MI                     3.0
## 41         KYLE WILLIAM            MI                     3.0
## 42             JARED GE            MI                     3.0
## 43          ROBERT GLEN            MI                     3.0
## 44             JUSTIN D            MI                     3.0
## 45            DEREK YAN            MI                     3.0
## 46      JACOB ALEXANDER            MI                     3.0
## 47          ERIC WRIGHT            MI                     2.5
## 48         DANIEL KHAIN            MI                     2.5
## 49            MICHAEL J            MI                     2.5
## 50           SHIVAM JHA            MI                     2.5
## 51       TEJAS AYYAGARI            MI                     2.5
## 52            ETHAN GUO            MI                     2.5
## 53               JOSE C            MI                     2.0
## 54          LARRY HODGE            MI                     2.0
## 55            ALEX KONG            MI                     2.0
## 56         MARISA RICCI            MI                     2.0
## 57           MICHAEL LU            MI                     2.0
## 58         VIRAJ MOHILE            MI                     2.0
## 59               SEAN M            MI                     2.0
## 60           JULIA SHEN            MI                     1.5
## 61        JEZZEL FARKAS            ON                     1.5
## 62        ASHWIN BALAJI            MI                     1.0
## 63        THOMAS JOSEPH            MI                     1.0
## 64               BEN LI            MI                     1.0
##    Player's Pre-Rating Average Pre Chess Rating of Opponents
## 1                 1794                                  1605
## 2                 1553                                  1469
## 3                 1384                                  1563
## 4                 1716                                  1573
## 5                 1655                                  1500
## 6                 1686                                  1518
## 7                 1649                                  1372
## 8                 1641                                  1468
## 9                 1411                                  1523
## 10                1365                                  1554
## 11                1712                                  1467
## 12                1663                                  1506
## 13                1666                                  1497
## 14                1610                                  1515
## 15                1220                                  1483
## 16                1604                                  1385
## 17                1629                                  1498
## 18                1600                                  1480
## 19                1564                                  1426
## 20                1595                                  1410
## 21                1563                                  1470
## 22                1555                                  1300
## 23                1363                                  1213
## 24                1229                                  1357
## 25                1745                                  1363
## 26                1579                                  1506
## 27                1552                                  1221
## 28                1507                                  1522
## 29                1602                                  1313
## 30                1522                                  1144
## 31                1494                                  1259
## 32                1441                                  1378
## 33                1449                                  1276
## 34                1399                                  1375
## 35                1438                                  1149
## 36                1355                                  1388
## 37                 980                                  1384
## 38                1423                                  1539
## 39                1436                                  1429
## 40                1348                                  1390
## 41                1403                                  1248
## 42                1332                                  1149
## 43                1283                                  1106
## 44                1199                                  1327
## 45                1242                                  1152
## 46                 377                                  1357
## 47                1362                                  1392
## 48                1382                                  1355
## 49                1291                                  1285
## 50                1056                                  1296
## 51                1011                                  1356
## 52                 935                                  1494
## 53                1393                                  1345
## 54                1270                                  1206
## 55                1186                                  1406
## 56                1153                                  1414
## 57                1092                                  1363
## 58                 917                                  1391
## 59                 853                                  1319
## 60                 967                                  1330
## 61                 955                                  1327
## 62                1530                                  1186
## 63                1175                                  1350
## 64                1163                                  1263