The Buffalo Bisons have activated OF MOISES SIERRA from their disabled list and officially added RHP NEIL WAGNER to the team's active roster. Wagner was optioned from the Blue Jays on Sunday.
To make roster room, RHP CLAUDIO VARGAS and INF EUGENIO VELEZ have been released of their contracts.
Sierra has been on the team's disabled list since July 4. In 72 games to begin the season, the outfielder has hit .264 (74-280) with 16 doubles, four triples, six home runs and 30 RBI. He also has seven stolen bases and six outfield assists.
Wagner began the season with the Bisons and was one of the best closers in the International League before his May 29 promotion to the Blue Jays. In 19 games with the Herd, Wagner was 1-0 with a 0.89 ERA and a perfect 13-for-13 in save opportunities. He allowed just 10 hits while striking out 32 in 20.1 innings of work and reached 100 mph with a pitch during an outing against the Louisville Bats.
Vargas pitched in 20 games and made 14 starts for the Bisons. Overall, the righty was 5-7 with a 5.86 ERA and 55 strikeouts in 83.0 innings of work. Velez hit .270 (60-222) with seven home runs, 24 RBI and 21 stolen bases in 69 games with the Herd.