AWK to calculate sum, min, max of particular field in txt

Recently, I came across situation to calculate the sum, min, max of particular field using awk.
Below is the snippet I've used to calculate the field values.

awk 'BEGIN{
FS=OFS=",";
max = -999999999; min = 9999999999;
print "----------------------------"
}
{
sub(" Total requests: ","",$2);
val = int($2);
lines+=1;sum+=val;
if( val > max ) max = val;
if ( val < min ) min = val;
}
END{
print "| Total No of Lines: "lines " Sum: " sum " Average: " sum/lines " Max: " max " Min: " min
}' with_out.txt

Text File Contents for parsing:

09/Sep/2008:03:57:09, Total requests: 36, New requests: 34
09/Sep/2008:03:57:10, Total requests: 61, New requests: 58
09/Sep/2008:03:57:11, Total requests: 40, New requests: 38
09/Sep/2008:03:57:12, Total requests: 101, New requests: 97
09/Sep/2008:03:57:13, Total requests: 33, New requests: 35