Fletcher hit a two-run double off Zane Smith (4-4) to highlight a five-run first inning.
Thomas's homer, his first of the season, highlighted a five-run third inning against Zane Smith.
Griffey's homer highlighted a four-run fifth inning that gave the Mariners a 4-3 lead.
Davis hit a two-run single to highlight a five-run second inning against Pascual Perez (0-4).
Adam Riggs entered as a .185 hitter and slammed a double that highlighted a four-run second inning.
Stillwell's homer highlighted a five-run fifth inning that put the Reds ahead to stay.
Wally Joyner's two-run homer highlighted a four-run third inning in support of Clark.
Gallego's double with the bases loaded highlighted a four-run fourth inning.
Carter hit a two-out homer to highlight a four-run first inning against Terrell (2-3).
Meares's first homer, a two-run shot to left, gave the Twins the lead for good and highlighted a six-run third inning.