Canadian tennis player Steven Diez was absolutely livid by what happened during his Houston qualifying match versus Gijs Brouwer. On a match point on Brouwer’s serve, Diez hit a passing winner after which the chair umpire called, “Game, set, match Diez.” Brouwer then questioned his serve and, after going down to check it out, the chair umpire reversed Diez’s match point. Diez insisted the chair umpire got the wrong mark but the chair umpire wouldn’t listen to it. The match continued and Brouwer claimed a 4-6 7-5 6-2 win over Diez in the Houston qualifying final …