The family of Ricardo Portillo, a Utah soccer referee who died after being punched by a teenage player, called on players Sunday to respect officials to prevent the same thing from happening to someone else.

Police accused a 17-year-old player in a recreational league of punching Portillo after he called a foul on him and issued a yellow card. Portillo died Saturday after a week in a coma.

Claudio Bieler scored two goals, the second on a penalty kick, and Jimmy Nielsen recorded his club-record 38th career shutout as host Sporting Kansas City beat Chivas USA, 4-0.

ICE HOCKEY: Martin Gerber stopped Matt Duchene in the eighth round of a shootout after Reto Suri scored his second goal of the tiebreaker and Switzerland stunned Canada, 3-2, in the world hockey championships in Stockholm.

In Helsinki, the United States beat Latvia, 4-1, to improve to 2-0.

NFL: Former Pro Bowl tackle Tyson Clabo signed with the Dolphins, filling the biggest hole in Miami's lineup.

Clabo is expected to play right tackle, with Jonathan Martin moving from the right side to left tackle, where he will replace the departed Jake Long.

The 6-foot-6, 330-pound Clabo spent the last seven seasons with Atlanta and was a 2010 Pro Bowl selection. Miami also signed undrafted rookie linebacker David Hinds, who played at Florida Atlantic.

TENNIS: Top-ranked Serena Williams beat Yulia Putintseva, 7-6 (5), 6-1, to advance to the second round of the Madrid Open.

Older sister Venus Williams withdrew early Sunday morning before her first-round match because of back problems.

Former top-ranked player Caroline Wozniacki was ousted by 35th-ranked Yaroslava Shvedova, 6-3, 6-4.

Tommy Haas won the BMW Open in Munich for the first time in his 10th attempt.

The third-seeded Haas beat defending champion Philipp Kohlschreiber, 6-3, 7-6 (3).

Stanislas Wawrinka won the Portugal Open by beating top-seeded David Ferrer, 6-1, 6-4.

TRACK AND FIELD: Mike Rodgers of the United States won the men's 100 meters in the Golden Grand Prix in Tokyo.

HORSE RACING: Zayat Stables said Nehro, runner-up to Animal Kingdom in the 2011 Kentucky Derby, died of colic.

- Associated Press