And the clock has officially started. With the World Series wrapping up in Game 7, Masahiro Tanaka now has three days to inform the Yankees whether he is opting out of his contract. Tanaka, who turned 29 on Nov. 1, has three years, $67 million remaining on the seven-year, $155 million deal he signed with the Bombers in 2014. There are a lot of factors to weigh, in what is certainly a complicated decision. PERFORMANCE During the playoffs, Tanaka pitched to a 0.90 ERA in three starts, looking very much like an ace in shutting down both the potent Indians and Astros. His stuff, which can be elite when his splitter and slider are working, was there — ever since a 15-strikeout performance against the Blue Jays on Sept. 29. But he allowed a career-high 35 homers during the regular season, pitching to a 5.47 ERA in the first half and a 3.77 ERA in the second half. He had a 3.22 ERA at home and a 6.48 ERA on the road. From 2014-16, Tanaka posted a 3.12 ERA over 75 starts. INJURY HISTORY Tanaka has been pitching with a partial tear of his UCL since 2014, though he’s managed to make 61 regular-season starts over the past two seasons. From 2014-15, he made 44 starts.