ARLINGTON -- After Arlington starting pitcher Tristan Jager reached base on an error and advanced to second on a wild pitch, the Eagles' Isaiah Vaughn hit what turned out to be the game-winning RBI single up the middle of the infield to lead Arlington to the Wesco 4A North win. Jager (1-0) only allowed two hits and three walks in 52/3 innings on the mound for the Eagles.At Arlington H.S.Mount Vernon 000 000 0--0 3 1Arlington 000 100 x--1 4 0Jorden Pullen and Mitchell Wohlman. Tristan Jager, Ryan Walker (6) and Josh Schempp. WP--Jager (1-0). LP--Pullen. 2B--Bryce Human (A). Records--Mount Vernon 1-4 league, 1-5 overall. Arlington 2-1, 3-2.