Sharks star Joe Thornton undergoes knee surgery

San Jose Sharks' Joe Thornton (19) during the first period of an NHL hockey game against the St. Louis Blues Thursday, March 16, 2017, in San Jose, Calif. (AP Photo/Marcio Jose Sanchez)
Marcio Jose Sanchez/Associated Press/File 2017
The Sharks' Joe Thornton played in four playoff games while nursing a torn ACL and MCL in his left knee that required surgery.

Before Joe Thornton heads into an uncertain offseason in which he could be a free agent and leave the San Jose Sharks after nearly 12 years, he had more pressing business. Thornton underwent surgery on a torn ACL and MCL in his left knee Monday to repair an injury that sidelined him less than two weeks before he returned to play the final four games of a first-round series loss to Edmonton. The futures of Thornton and teammate Patrick Marleau, who will both turn 38 before next season begins, are the biggest questions for San Jose headed into the offseason. The two have been the face of the Sharks for years . . . The Blackhawks fired assistant coach Mike Kitchen, who joined coach Joel Quenneville’s staff in July 2010 . . . The University of Michigan named former Michigan Tech coach Mel Pearson its head coach, replacing Red Berenson, who retired this month after 33 years at the helm.


Serena Williams fires back at Nastase

Serena Williams spoke out in response to suspended Fed Cup captain Ilie Nastase’s comments speculating about the skin color of the baby the pregnant Williams is expecting. The 23-time major champion wrote on Instagram on Monday: ‘‘It disappoints me to know we live in a society where people like Ilie Nastase can make such racist comments towards myself and [my] unborn child.’’ Williams is black. Her fiance, Reddit co-founder Alexis Ohanian, is white. Williams also referred to Nastase’s ‘‘sexist comments against my peers’’ — a reference to his verbal abuse directed at British player Johanna Konta, British captain Anne Keothavong, and the chair umpire during Fed Cup matches over the weekend. He was ejected from the Romania vs. Britain contest and provisionally suspended by the International Tennis Federation . . . Maria Sharapova’s first opponent after her 15-month doping suspension said the Russian should not have been granted a wild card for the Porsche Grand Prix in Stuttgart, Germany, or upcoming tournaments. Roberta Vinci, who will face Sharapova in a highly anticipated first-round match Wednesday, does ‘‘not agree’’ with organizers giving Sharapova a free passage into the main draw of their events. ‘‘She is a great player and I have nothing against her. She paid for her mistakes,’’ Vinci said. ‘‘She can return to play but without any wild cards, without any help.’’ Sharapova’s suspension for using heart drug meldonium after it was banned at the beginning of 2016, ends on Wednesday, just in time to enter the opening round of the indoor clay tournament she won three times in a row from 2012-14. Vinci joined the likes of Caroline Wozniacki, Dominika Cibulkova, Agnieszka Radwanska, and Angelique Kerber in speaking out against wild cards for players who return from a doping suspension.


Ex-BC star Bagley to coach high school

Former NBA guard John Bagley was named head boys’ coach at Warren Harding High School, his alma mater in Bridgeport, Conn. Bagley became a star guard at Boston College, where he was named Big East Player of the Year. He was chosen 12th overall by the Cavaliers in the 1982 NBA Draft, and also played with the Celtics, Nets, and Hawks during an 11-year career . . . North Carolina juniors Joel Berry II and Theo Pinson will join freshman Tony Bradley in declaring for the NBA Draft, though they won’t hire agents, giving them until May 24 to withdraw their names and return to school. Tar Heels junior Justin Jackson previously announced he would enter the draft and hire an agent . . . Big 12 defensive player of the year Jevon Carter of West Virginia declared for the NBA Draft but will not sign with an agent . . . Louisville junior forward Jaylen Johnson will hire an agent and remain in the NBA Draft . . . Guard Austin Rivers, sidelined since March 30 with a strained left hamstring, is expected to return for the Clippers on Tuesday for Game 5 of their Western Conference playoff series with the Jazz . . . Indiana wants the NBA All-Star Game and sent Larry Bird to get it — in an Indy car. Bird drove four blocks down Fifth Avenue in his car to deliver the Pacers' bid to host the 2021 game to NBA Commissioner Adam Silver, fitting his 6-foot-9-inch frame into a car usually driven by much shorter people


Indians’ Delabar suspended 80 games


Former All-Star pitcher Steve Delabar, 28, a veteran of six major league seasons with Seattle, Toronto, and Cincinnati, was suspended for 80 games following a positive test under baseball’s minor league drug program. The righthander, with Cleveland’s Triple A team in Columbus, tested positive for the performance-enhancing substance Ostarine . . . Mariners minor league righthander Jonathan Aro was suspended 50 games for an unspecified violation. Aro made his big league with the Red Sox in 2015, appearing in six games . . . Twins third baseman Miguel Sano was suspended for one game and fined by MLB for ‘‘aggressive actions’’ that caused benches to clear during Saturday’s game against Detroit . . . The Diamondbacks placed righthander Shelby Miller on the 10-day disabled list with right elbow inflammation and recalled righthander Silvino Bracho from Triple A Reno.


Marathoner Mayorova banned 4 years

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Russia’s track and field federation said marathon runner Albina Mayorova was banned for four years for doping. The All-Russia Athletics Federation said that the suspension was handed down by the Court of Arbitration for Sport after the two-time Olympian tested positive for excess testosterone in a test taken last year. The ban is likely to spell the end of the 39-year-old Mayorova’s competitive career. Mayorova’s best result at a major championship was eighth at the 2012 Olympics in London. She has also been a top-10 finisher at the Boston, London, and Chicago marathons . . . Russian heptathlete Tatyana Chernova was stripped of her 2008 Beijing Olympics bronze medal for doping with an anabolic steroid. The International Olympic Committee said Chernova’s urine sample revealed traces of turinabol in a retesting program of Beijing and 2012 London Olympics athletes. In a previous doping case, Chernova lost her 2012 Olympic bronze medal and was also stripped of the 2011 world title — which went to Jessica Ennis-Hill of Britain . . . Jockeys Javier Castellano, Victor Espinoza, and Garrett Gomez, and thoroughbred Goldikova have been elected to the National Museum of Racing’s Hall of Fame. Castellano, 39, has won the Eclipse Award for outstanding jockey the past four years. Entering the week, he had 4,664 career wins and was ranked fifth all-time in purse earnings, with more than $276 million . . . Former Czech Republic defender Frantisek Rajtoral, 31, who won the domestic league soccer title four times before joining Turkish club Gaziantepspor, died on on Sunday. The Czech football federation said in a statement that Rajtoral had ‘‘committed suicide in Turkey’’ . . . Tomasz Gollob, the 2010 world motorcycle speedway champion, is in an induced coma after injuring his spinal cord in an accident while training in Poland. Dr. Cezary Rybacki of the hospital in Gollob’s hometown of Bygdoszcz, where the racer underwent surgery Sunday, said Gollob was on a respirator and that his condition was serious, but stable.