Personally, I can't believe that he is gonna get the most playing time. The team needs to put out the best players possible, and 25 games does make a difference. First, Gwynn is putrid with the bad. PECOTA projects him at .251/.321/.344 in the major leagues. Gross on the other hand, has a projected line of .267/.366/.467. Gwynn is fast. But unfortunately he's not that great of a baserunner. The best baserunning statistic out there is Dan Fox's EqBRR. In 05 he was -1.4 runs, in 06 +3.4 runs, in 07 completely average. Gross, the last three years has had positive baserunning runs at +1.6 last year, +2.5, and +.9. Gwynn's defense has been praised by many. However, FRAA has 0 runs above average, for the past three years. Gross, is seen as an average fielder by other systems. With all those combined, it's not even a contest. Gross is significatly better, and although the difference will be around 5 or so runs over the course of 25 games, it's stupid to play Gwynn over Gross.