Rogers Centre has the 4th-least fair ground among all major league stadiums — generally good for homers. Batters such as Danny Jansen with extreme groundball tendencies are usually more effective when facing pitchers like Logan Webb who skew towards the flyball end of the spectrum. Danny Jansen will hold the home field advantage today, which ought to bolster all of his stats. Last season, Danny Jansen had an average launch angle of 15° on his hardest-contacted balls, while this season it has significantly increased to 20.1°. In the past two weeks' worth of games, Danny Jansen's 34.8% rate of hitting balls at a HR-maximizing launch angle (between 23° and 34°) shows big improvement over his seasonal rate of 21.6%.