RIO DE JANEIRO (AP) — Juan Martin del Potro bounced the ball, waiting to try to serve out his second-round match at the Olympic tennis tournament.
Argentine fans sang for him. Brazilians chanted for his opponent, seeking to drown out their rivals. Boos and whistles and shushes echoed around center court.
"Please," the chair umpire said into his microphone, imploring spectators for some quiet.
There has been little of that at the Olympic Tennis Center in Rio de Janeiro. While crowds are sparse for many sports, they've been healthy for tennis — and often far louder than the number of folks in the stands would suggest.