Rebuilds are all about the small victories, ideally hewing closer to symbolic than pyrrhic. The Mariners season, relative to the torch being toted by many clubs, has had a promising beginning. Yes, they leave Houston 1-3 after tonight’s 8-5 loss, but the club is mostly healthy (knock on Kyle Lewis’ off-gray wooden bat). Just ahead of first pitch, Brandon Brennan hit the IL with an oblique strain, but compared to the league-wide avalanche of injuries, illness, and outbreak, things seemed quaintly at ease in the Mariners’ final game of the series at Minute Maid Park.