The Letter i, the only sheet and the Padres were rained out yesterday in Cincy

Tadahito Iguchi, 2008 Topps Heritage; Tadahito played in 81 games for the Padres in 2008.
Will Inman, 2008 Bowman; Will played in the Padres system from 2007 to 2011.
Dane Iorg, 1987 Topps; Dane played in 90 games for the Padres in 1986.
Mike Ivie, 1976 SSPC; Mike played in 403 games for the Padres in 1971 and again from 1974 to 1977.

Cumulative Count
Cards-354
Players-318
Executives-5
Hall of Famers-4
Coaches-19
Sets of Brothers-5
Father/Son Combo-1
Trainer-1
Didn't play for the Padres-64

9 letters down, 17 to go