Jannik Sinner’s white arm sleeve has become the talk of the Cincinnati Open, but it’s not about fashion or lingering injury worries. Sinner, the world No. 1 and defending champ, says he just likes the feel and stability it gives his game—even in the brutal Ohio heat. With players dropping from the intense temperatures, everyone’s watching to see if Sinner sticks with the sleeve in his next match. What do you think: smart move for performance, or would the heat make you ditch it? #Sports #Tennis #JannikSinner