ゲリー・ウェバー・オープン
Mayer's biggest weaknesses are his lack of match consistency and fitness, having had inconsistent results throughout his career and a relatively small build. He has also suffered from numerous injuries throughout his career, most notably his groin injury in 2015 that prevented him from playing for more than a year. However, he has since made a comeback, winning his second title at the 2016 Halle Open.