What williams said is the best advice just be honest. We got saddled with a nightmare teammate several years back (a friend of a friend who moved here and wanted to bowl). Among his escapades were arguing and cussing at a lady on the team we were bowling who was just trying to fix the score on the machine, Losing his balance and ended up pushing a lady pretty hard while telling her in a rude tone "Hey, it is your turn", and coming out of the bathroom crying one night because he was bowling bad. Our one teammate offered to tell him and he just said "We do not want you to bowl next season it is just not working out". He had also missed about eight times for the dumbest reasons so that all played into it.
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Columbia U-Turn (June 2006-January 2008)
HG: 236
HS: 593
Hammer Black Widow (February 2008-Now)
HG: 246
HS: 627
Fall 2007-2008 League Avg- 164
Fall 2008-2009 League Avg- 180
Summer 2009 League Average-178
Current Average- 182