Top prospect Taijuan Walker did not allow an earned run over five innings in his major league debut and Dustin Ackley had a career-high four hits with four RBIs to help the Seattle Mariners beat the Houston Astros 7-1 on Friday night.
The 21-year-old right-hander, rated the fifth-best prospect in baseball, yielded two hits and one run with two strikeouts and a walk. If the 6-foot-4 Walker (1-0) had any rookie nerves, it certainly didn't show as he retired the first eight batters he faced.
The Astros were up by one in the fourth before Ackley tied it with an RBI single. Seattle led by two in the fifth before a single by Ackley made it 5-1. A run-scoring single in the ninth gave Ackley four RBIs to tie a career best.
Houston starter Brad Peacock (3-5) was tagged for seven hits and five runs in 4 2-3 innings.
Abraham Almonte, also playing his first major league game, added two RBIs to help the Mariners win their second straight following a six-game slide.
Seattle relievers Carter ...