SYRACUSE – Aaron Sanchez went as deep into a game as he ever has in his professional baseball career Monday night, but had no decision to show for it.

The Buffalo Bisons right-hander, regarded as one of Toronto’s top young pitching prospects, pitched seven full innings of the Herd’s 5-4 loss to the Syracuse Chiefs in 11 innings before 2,039 in NBT Bank Stadium.

Syracuse won it on a two-out homer in the 11th by Sandy Leon, his first of the season for the Chiefs.

Still looking for his first Triple-A victory, Sanchez (0-1) left after making 83 pitches, 56 for strikes, with a one-run lead.

That vanished when lefty Brett Cecil, down from the Blue Jays on a rehab assignment, gave up a tying home run to Tyler Moore in the bottom of the eighth. Sanchez allowed seven hits, all singles, one walk and struck out two.

Twice the Bisons had two-run leads, but failed to hold on.

The Chiefs tied it at 2-2 with a pair of runs in the sixth. The Syracuse run in the seventh was all on Sanchez. He hit Brandon Laird with a pitch, then moved him around with a wild pitch and balk before an RBI single by Josh Johnson.

The Herd scored twice in the second when Erik Kratz walked A.J. Jimenez tripled and Andy LaRoche produced a sacrifice fly. Buffalo regained the lead in the seventh when a double by Jonathan Diaz, an infield single by Kevin Pillar and a double by Dan Johnson produced two runs.

The teams will complete their four-game series tonight (Radio 1520, 7:06 p.m.) when Deck McGuire (3-3, 4.95) faced Chiefs right-hander Josh Roenicke (3-4, 4.89). Buffalo comes home for a 5:35 p.m. doubleheader with the Scranton/Wilkes-Barre Yankees at Coca-Cola Field.