Uehara joined the Red Sox in 2013 and inherited the closer's role midway through the season, helping to stabilize the bullpen that was a key contributor to the title. Uehara converted his first 15 save opportunities this season to run his streak to 31 in a row — the second-longest in franchise history — and made the All-Star team for the first time. With 46 walks and 412 strikeouts in 351 1-3 innings, he has the best career strikeout-to-walk ratio and of any pitcher in baseball history with at least 100 innings. [...] Thursday, the Red Sox said that outfielder Rusney Castillo will be held out for the remainder of the Arizona Fall League schedule after straining the muscle between his thumb and fingers.