SEATTLE -AP- James Paxton extended his season-opening scoreless streak to 21 innings, Taylor Motter hit a three-run homer and the Seattle Mariners beat the Texas Rangers 5-0 on Saturday night.Paxton (2-0) threw eight innings of two-hit ball, walking one and striking out nine. He hasn't allowed a run yet in three starts this year, and his scoreless stretch is a team record. He's the 10th pitcher in the majors ever to open a season with three scoreless starts of at least six innings.Kyle Seager added a two-run single as part of a five-run sixth inning for Seattle, which won back-to-back games for the first time this season.Andrew Cashner (0-1) lost in his first start since signing with Texas as a free agent.