20-time Grand Slam champion Roger Federer has announced his signature shoe “Roger Pro” is now available for purchase by general consumers. Ahead of his much-anticipated comeback in 2021, Federer was spotted training in an as yet unseen a pair of sneakers. Not seeing Federer in his preffered Nike shoes was a bit odd and later it was revealed the shoes were designed in a collaboration with Swiss running brand On. Federer debuted in Roger Pro in Doha and rocked the shoes in each of the five tournaments he played last year. Last year, Roger Pro was released in limited quantitie …