Has any pitcher won a game without making an official pitch?

Answer 1

Yes.

The last time it happened in MLB was in the 2009 season in a game between the Washington Nationals and Colorado Rockies. Alan Embree of the Rockies was brought in with 2 outs in the top of the 8th inning and the score tied at 4. He picked Austin Kearns of the Nats off first for the third out before throwing a pitch to the batter. He was pinch hit for in the bottom of the 8th and the Rockies scored a run to take a 5-4 lead. Huston Street came in to pitch the top of the 9th and got the save.

B. J. Ryan of the Baltimore Orioles won a game without throwing a pitch against the Detroit Tigers on May 1, 2003. He was brought in with 2 out in the bottom of the 7th with the score tied at 2. He picked the runner off first base for the third out before throwing a pitch to the batter. The Orioles scored in the top of the eighth, Ryan was replaced, and the Orioles wound up winning 5-2.