After two years in the Bronx, left-handed starting pitcher James Paxton is returning to the Seattle Mariners after spending the first six seasons of his career in the Pacific Northwest. In eight big-league seasons, the 32-year-old has a 3.58 ERA, 1.21 WHIP and 9.9 strikeouts per nine innings in 753 1/3 innings (136 starts). But the Canadian southpaw had a rough 6.64 ERA, 1.48 WHIP, 28.9 percent strikeout rate and 7.8 percent walk rate in only five starts (20 1/3 frames) and dealt with a forearm...