In 2007, Pete LaForest played in 10 games for the San Diego Padres, batting in all of them. He had 25 at bats, getting 9 hits, for a .360 batting average, with 3 runs batted in. He was walked 5 times, 1 times intentionally. He struck out 8 times. He hit 1 doubles, 0 triples, and 1 home runs.
A 1988 Donruss Tony Gwynn card 164 has a book value of about .30 cents in near/mint -mint condition. Professionally graded cards will sell for more. Condition is important.
Common flaws with baseball cards include: rounded edges, creases, off centered, and faded color. Any or all flaws will devalue the card significantly.