Koskie, who was playing for Team Canada in the World Baseball Classic, suffered dizziness after diving for a groundball.
After the 2006 season, he left baseball due to concussions. While he doesn't believe he suffered a concussion from the recent play, he started to question whether it was worth it.
"After that play I kind of thought, 'What am I doing out here?' " Koskie said. "Whether I got the wind knocked out of me or what, I did feel a little funky after it. I don't think it was a concussive event, but I did feel a little funny."For his career, Koskie hit .275, 124 homeruns, drove in 506 runs and stole 71 bases. He had a career year in 2001 when he had a line of: BA of .276, 100 runs, 26 HRs, 103 RBI and 27 SBs.