Of his 22 pinch running appearances, Morris scored 4 runs. 1 in 1979 and 3 in 1983.
1979 run = a loss, May 26th 5-7 to BAL in 16 innings. Morris pinch ran for Rusty Staub in the 9th and was the tying run. 2nd and 3rd and 1 out, Morris scored on an E1 ground ball.
1983 run1 = a loss, April 16th 1-3 to CHW. Morris pinch ran for Wockenfuss in the 7th and scored on a bases loaded Sac Fly giving the Tigers a 1-0 lead. DET gave up 3 in the bottom of the 8th.
1983 run2 = a win, July 10th 5-3 over OAK. DET trailed 3-0 in the 9th. Morris pinch ran for Wockenfuss. Lance Parris hit a Grand Slam to end the game.
1983 run3 = a win, July 17th 8-1 over SEA. Game was tied 1-1 going into the top of the 10th. Morris pinch ran after a leadoff walk to Glenn Wilson. He scored on a bases loaded, no out double by Brookens. DET scores 7 in the inning.
None of these runs were the difference in Morris' speed. Based on game conditions, the run would have scored regardless of who was on base.
So you run a guy 22 times, only to score 4 runs that probably would have scored anyways. Smart?