And tell the pleasant prince this mock of his
Hath turned his balls to gun-stones, and his soul
Shall stand sore chargèd for the wasteful vengeance
That shall fly with them;
Yu Darvish returned to the Texas rotation at the end of May, after losing all of 2015 to Tommy John surgery. He made three starts before going back on the DL with neck and shoulder issues. He made it back for keeps at the All-Star Break, and went 5-5, 3.51 in his 14 second half starts, finishing his season with two very fine outings (against Oakland and Tampa Bay, but still.) This will be just the second post-season start of his career - it came against the Orioles in the 2012 Wild Card Game. Darvish pitched well, but Joe Saunders was better and the Rangers went home.
Darvish hasn't seen the Jays since July 2014, when he fanned 12 Jays in 6.2 IP en route to a 5-1 win at the Dome. The Jays did beat Darvish in Texas a couple of months before that. Darvish himself was outstanding that day as well (8IP, 5H, 2R, 11K), but Drew Hutchison chose that occasion to pitch his first career shutout. Overall, Darvish is 3-2, 2.45 in 7 career starts against Toronto, striking out 61 while walking just 17 in 47.2 IP.
J.A. Happ faced the Rangers just once this season, in Toronto back in May. He was in complete control, allowing just a single run in 7 IP as the Jays abused Derek Holland along the way to a 12-2 win. Happ's now made 5 career starts against the Rangers and while the first (while he was with Houston) was a disaster, the last four have all been very good - even the two times he faced them last year during his brief and generally disappointing turn with the Seattle Mariners. Happ's career log against the Rangers to 3-2, 3.07 in 5 career starts - as a Blue Jay, he's 2-0, 1.38.
Oddly enough, the Jays are much more likely to change their lineup for Game 2 - I assume Saunders will be in for Upton, either at DH or in RF with Carrera moving to LF. The Texas lineup is pretty set. Banister could play Ryan Rua, a RH bat, instead of Shin-Soo Choo in RF or Mike Moreland at 1b. First-half rookie star Nomar Mazera seems to have been buried and forgotten somewhere on the bench, and he's another LH bat anyway.