Mexico City — Dustin Johnson didn’t flinch when a challenge arrived out of nowhere on Sunday, playing mistake-free over the final five holes to win the Mexico Championship in his debut as the No. 1 player in the world.

Johnson’s four-shot lead going to the back nine turned into a one-shot deficit when Spanish rookie Jon Rahm ran off an eagle and two birdies at Chapultepec Golf Club. Johnson caught him with a birdie on the par-5 15th, and closed with three solid pars for a 3-under 68.

Rahm had gone 59 holes without a three-putt until taking two in a row at the worst time to fall back.

Johnson was steady right to the end to capture his 14th career victory on the PGA Tour, and his second straight. He reached No. 1 in the world two weeks ago with a five-shot victory at Riviera.

Ochoa to Play Own LPGA Stop

Mexico City — Lorena Ochoa is going to compete on the LPGA Tour for the first time in five years, but only for her tournament.

Ochoa said on Sunday that she will play in the Lorena Ochoa Match Play on May 4-7. It will be her first time competing since the Lorena Ochoa Invitational in 2012.

The 35-year-old Mexican star walked away from the game in 2010 when she was No. 1 in the world. She is married with three children, and she stopped playing her LPGA Tour event when her first child was born.

College Men’s Basketball

Missouri Dumps Coach

Columbia, Mo. — Missouri fired basketball coach Kim Anderson after less than three seasons with his alma mater.

Tigers athletic director Jim Sterk said in a statement on Sunday that he asked Anderson to step down after this week’s SEC Tournament. Missouri is the No. 14 seed and plays Auburn on Wednesday night.

Anderson took over a program in disarray after leading Central Missouri to the Division II national championship but was never able to get things going in the right direction. He compiled a 26-67 record with the Tigers, who were 7-23 and 2-16 in the SEC this season.

Anderson was a conference player of the year for Missouri before spending two stints as Norm Stewart’s assistant coach. But despite his history with the Tigers, he never seemed to be embraced by an agitated fan base weary after the shaky tenures of Quin Snyder, Mike Anderson and Frank Haith.

Baseball

Angels IF Escobar Passes U.S. Citizenship Test

Tempe, Ariz. — More than a decade after his harrowing escape from Cuba, Los Angeles Angels third baseman Yunel Escobar has passed his naturalization test to become a U.S. citizen.

Escobar took the exam earlier in the week in Miami.

“The greatest thing that can happen to you is to be a citizen of this great country,” Escobar said through a translator.

Escobar fled Cuba in 2004 at age 21, leaving on a boat. He said giving up his Cuban citizenship was difficult, “but I also know this is the country that is providing for me now and in the future.”

Escobar said the toughest part of the process was studying for the test. He said he learned about the Civil War and World War II in preparation.

“The time was now. I’m going to be a guy with 10 years in the big leagues. My two kids are U.S. citizens, too. We thought it was the appropriate time to take that next step,” he said.