Reuters Sports News Summary

Following is a summary of current sports news briefs. Patriots TE Gronkowski announces retirement

New England Patriots tight end Rob Gronkowski announced his retirement Sunday on Instagram, ending one of the league's most dominant and colorful careers after nine seasons. "It all started at 20 years old on stage at the NFL draft when my dream came true, and now here I am about to turn 30 in a few months with a decision I feel is the biggest of my life so far. I will be retiring from the game of football today," he wrote. Golf: Casey defends Valspar Championship with one-shot victory

Paul Casey became the first player to successfully defend his Valspar Championship title when he secured a hard-fought one-stroke win over Louis Oosthuizen and Jason Kokrak in Florida on Sunday. Overnight leader Casey eked out a one-over-par 72 in the final round at Innisbrook Resort in Palm Harbor, where he hit a superb shot from a fairway bunker at the final hole and then two-putted for the win. Ice hockey: Calgary top Montreal to capture Clarkson Cup

The Calgary Inferno won the Clarkson Cup with a 5-2 victory over the rival Les Canadiennes des Montreal in the Canadian Women's Hockey League one-game final on Sunday. Brianna Decker's second-period tally held up as the game-winning goal and Calgary captain Rebecca Johnston iced the victory with an empty-netter after Montreal pulled their goalie in a last-ditch attempt to close the gap. Texas survives in OT over Xavier in NIT

Naji Marshall's potential game-tying layup rolled off the rim at the end of overtime as No. 2 seed Texas defeated No. 3 seed Xavier 78-76 in the second round of the NIT in Austin, Texas. Texas' Kerwin Roach II missed 3 of 4 free throws in the final 22 seconds that could have iced the game for Texas. Halep recovers to beat Hercog, Venus wins in Miami

Romanian second seed Simona Halep fought back from a set down to defeat Slovenian Polona Hercog in a challenging third round match at the Miami Open on Sunday. Hercog, ranked 93rd in the world, pushed Halep all the way in the second set but the Romanian dominated the tiebreak to turn the match around and eventually triumphed 5-7 7-6(1) 6-2. Holder Isner advances in Miami and will face Britain's Edmund next

Defending champion John Isner unleashed 16 aces in claiming a 7-5 7-6(6) victory over determined Spaniard Albert Ramos-Vinolas in the third round of the Miami Open on Sunday. Ramos-Vinolas broke Isner to start the match but the American saved the next four break points he faced to advance. Keselowski dominates at Martinsville for win No. 29

One month ago, Brad Keselowski drove to victory in Atlanta despite being caught in the nauseating grip of the flu. On Sunday it was the rest of the drivers in the field who were left feeling queasy as Keselowski was absolutely dominating in winning the STP 500 Monster Energy NASCAR Cup Series race at Martinsville Speedway in Virginia. How dominating was the Michigan native on Sunday? He led 446 of 500 laps, including the final 127, and collected victories in all three stages. Cal fires coach Jones; Kidd reportedly on radar

California fired basketball coach Wyking Jones on Sunday after two seasons and a 16-47 record. "This was a difficult decision to make and comes after a deliberate and holistic review of our men's basketball program," Cal athletic director Jim Knowlton said in a prepared statement. "As always, we were guided by the best interests of our student-athletes, as well as the values and objectives of Cal Athletics and our University. As we quickly turn toward our search for a new head coach for our men's basketball program, I am certain that we will attract a strong, talented and highly qualified pool of candidates. I am confident that we will find someone who will help lead us on a path to being exceptional." Syndergaard expresses frustration with Mets' decisions

Pitcher Noah Syndergaard fired a shot at the New York Mets front office Sunday, expressing frustration that teammate Jacob deGrom hasn't been signed to a contract extension and that the team has an unconventional travel schedule prior to Opening Day. The Mets and deGrom, who won the 2018 National League Cy Young Award, talked in the offseason, but deGrom told reporters Saturday he wasn't confident of an agreement in the next few days. WR Maclin announces retirement

Two-time 1,000-yard receiver Jeremy Maclin announced his retirement Sunday. Maclin, 30, made the announcement at his wife's baby shower.