A painted-face fan attends the 86th MLB All-Star Game.
2 of 31Andres Kudacki/AP
A ''recortador'' jumps over a bull during a competition at the San Fermin festival in Pamplona, Spain.
3 of 31Thomas Lovelock - AELTC Pool/Getty Images
Serena Williams and Novak Djokovic dance on stage at the Champions Dinner at Wimbledon.
4 of 31Simon Bruty for Sports Illustrated
Megan Rapinoe got a little goofy during the Sports Illustrated cover shoot.
5 of 31Gregory Bull/AP
Isabela Onyshko of Canada performs on the uneven bars during women's artistic gymnastics team competition in the Pan Am Games in Toronto.
6 of 31Timothy A. Clary/AFP/Getty Images
A member of team Mexico competes during the Synchronized Swimming Team Finals.
7 of 31Ezra Shaw/Getty Images
Amelia Hundley of the U.S. competes on the balance beam during the artistic gymnastics team final and qualifications on Day 2 of the Toronto 2015 Pan Am Games.
8 of 31Alvaro Barrientos/AP
Revelers from around the world arrive in Pamplona every year to take part in some of the eight days of the running of the bulls.
9 of 31Dean Mouhtaropoulos - FIFA/FIFA via Getty Images
The Beach Babes perform at the Beach Soccer World Cup match between Brazil and Mexico in Portugal.
10 of 31Laurent Cipriani/AP
A BMX bike stunt as the pack of Tour de France riders pass by.
11 of 31Steve Nesius/AP
Chris Archer of the Tampa Bay Rays douses David DeJesus after a 4-3 win over the Houston Astros.
12 of 31Mark Blinch/The Canadian Press via AP
Claudia Rivas of Mexico (front) dives in with the rest of the racers to start the the women's triathlon at the Pan Am Games in Toronto.
13 of 31Ian MacNicol/Getty Images
Daniel Dias of Brazil competes in the 50m Backstroke S5 during Day One of The IPC Swimming World Championships in Glasgow, Scotland.
14 of 31Ezra Shaw/Getty Images
Felicia Stancil of the U.S. goes around Mariana Pajon Londono of Columbia on her way to winning the women's BMX Final at the Toronto 2015 Pan Am Games.
15 of 31Justin Berl/Icon Sportswire
A.J. Burnett of the Pittsburgh Pirates catches Gregory Polanco with a whipped cream pie after Polanco's walkoff single during the 10th inning against the St. Louis Cardinals.
16 of 31Bob Martin for Sports Illustrated
Jelena Jankovic playing against Petra Kvitova in the third round at Wimbledon.
17 of 31LM Otero/AP
Luis Tejada of Panama takes a shot against Haiti during the CONCACAF Gold Cup soccer match in Frisco, Texas.
18 of 31Martin Rose/Bongarts/Getty Images
Participants during the Mudflat Olympic Games in Brunsbuettel, Germany.
19 of 31 Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images
Neil Seery (left) against Louis Smolka in their flyweight fight during the UFC 189 event inside MGM Grand Garden Arena in Las Vegas.
20 of 31Ian Walton/Getty Images
Novak Djokovic dives for a backhand against Richard Gasquet at Wimbledon.
21 of 31Jeff Pachoud/AFP/Getty Images
Peter Sagan of Slovakia jumps as he celebrates his green jersey of best sprinter at the end of the 181.5 km eighth stage of the Tour de France.
22 of 31Doug Pensinger/Getty Images
Dieter "Didi" Senft, the self styled "Devil" of the Tour de France, cheers on the riders during stage five of the 2015 Tour de France.
23 of 31Lionel Bonaventure/AFP/Getty Images
A Tour de France fan is suspended from a crane during the sixth stage of the race.
24 of 31Michael Dwyer/AP
Rob Refsnyder of the New York Yankees jumps over Alejandro De Aza of the Boston Red Sox, who stole second base during the third inning.
25 of 31Alvaro Barrientos/AP
Revelers at the annual running of the bulls.
26 of 31Michael Tureski/Icon Sportswire
Fans pose for a picture before the Honduras versus Panama game during the CONCACAF Gold Cup at Gillette Stadium.
27 of 31Andy Mead/YCJ/Icon Sportswire
U.S. fans at the Men's National Team's game against Panama in Kansas City, Kansas.
28 of 31Timothy A. Clary/AFP/Getty Images
Mexico performs the Synchronized Swimming Team Technical Routine at the Toronto 2015 Pan American Games.
29 of 31Photo News/Panoramic/Icon Sports
Fans at the Tour de France.
30 of 31Photo News/Panoramic/Icon Sports
A publicity caravan rolls down the street during the stage 4 of the Tour de France.
31 of 31Chris McGrath/Getty Images
A cyclist enters the velodrome during Keirin races at Kawasaki Velodrome in Japan. Keirin is a form of racing developed in Japan around 1948 for gambling purposes, and has since become extremely popular.
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