The friendly confines of the Rogers Centre greatly benefit the batter as the ball tends to fly out of the concrete bandbox at an accelerated rate. According to ESPN Park Factors, the Rogers Centre ranked first out of all the MLB stadiums in home runs in 2019 with a ratio of 1.317.
This being said, there are a number of free-agent pitchers whose propensity for inducing ground balls could bode well north of the border for the Blue Jays in 2020.
Fangraphs estimates the league average for ground balls among pitchers is 44% while a ground ball pitcher tends to be upwards of 50% or more.