Info from USCF website. Number of events that players played in 2013 that Portland Chess Club held.
1. Mike Janniro 23
2. Nick Rapits 21
3. Jerrold Richards 20
4. Brian Berger 19
5. Lennart Bjorksten 17
6. Mike Hasuikel 17
7. Jerry Sherrad 17
8. Andrew Trattner 17
9 Jason Cigan 16
10. Harry Buerer 15
11. Steven Deeth 15
12. Yurity Kamshs 15