SEATTLE (AP) — Kendall Graveman and Taijuan Walker were looking for an opportunity to prove similar injuries hadn’t completely derailed their careers. The Seattle Mariners were willing to take a chance on them. Signing a pair of motivated, low-cost starting pitchers fit within the Mariners' rebuilding plans. The Mariners will begin to find out what they have when they open the season in Houston. Over the past two seasons, the two have thrown just 48 combined innings as their careers were sidetracked by elbow injuries and Tommy John surgery. The next two months is an audition for their futures.