(Undated) — The new MLB pitch clock rules are already showing results. The league announced on Thursday that the average time of a nine-inning game so far this season is two hours and 36 minutes, which is down one minute from last year. The clock was lowered from 20 seconds to 18 with runners on base, but kept at 15 seconds with bases empty. However, MLB Players Association head executive Tony Clark claims the pitch clock is an “unprecedented” threat to the game and points to pitcher injuries as a result. The league responded by highlighting “velocity and spin rate increases” as having the highest correlation to arm injuries.