Today in sports history: Rocky Marciano retires as undefeated heavyweight champion in 1956
Here's a look back at sports happenings on this date in history, April 27:
1956: Rocky Marciano retires from boxing
1956 — Rocky Marciano retires as the undefeated heavyweight boxing champion. He finished with a 49-0 record, including six title defenses and 43 knockouts.
In this April 27, 1956 file photo, World heavyweight champion Rocky Marciano gestures at a new conference in New York after announcing his retirement from boxing.
1968: Jimmy Ellis wins Ali's vacated title
1968 — Jimmy Ellis won the world heavyweight boxing title with a 15-round decision over Jerry Quarry in Oakland, Calif. This is the final bout of an eight-man elimination tournament to fill Muhammad Ali's vacated title.
Jack Quarry finds no words of comfort to give hi son, Heavyweight boxer Jerry Quarry, who hangs over the ropes after dropping a 15-round decision to Jimmy Ellis in their fight for the heavyweight championship of the world in Oakland, Calif., April 27, 1968. (AP Photo)
2008: Ashley Force first woman to win national Funny Car race
2008 — Ashley Force becomes the first woman to win a national Funny Car race. The 25-year-old beats her father, drag racing icon John Force, in the final round of the 28th annual Summit Racing Equipment Southern Nationals to deny him his 1,000 winning round in his 500th NHRA tour event.
Drag racer Ashley Force, daughter of funny car race hero, John Force, poses on her dragster at her father's showroom in Yorba Linda, Calif., Thursday, July 13, 2006. (AP Photo/Ric Francis)
2009: Nuggets tie NBA record with 58-point playoff win
2009 — The Denver Nuggets match the biggest victory in playoff history with their 121-63 rout of New Orleans in Game 4 of their first-round series. The Minneapolis Lakers had the other 58-point postseason victory, beating the St. Louis Hawks 133-75 in 1956. The Hornets record playoff lows in points, field goals made (17), field goals attempted (54), assists (10) and second-half points (24).
New Orleans Hornets forward James Posey (41) passes the ball from the floor as Denver Nuggets forward Carmelo Anthony (15) races for the ball in the first half of Game 4 of a first-round playoff NBA basketball game in New Orleans, Monday, April 27, 2009. (AP Photo/Bill Haber)
2011: Bruins eliminate Canadiens with OT goal by Nathan Horton
2011 — Nathan Horton scores 5:43 into overtime to give the Boston Bruins a 4-3 victory over the Montreal Canadiens in Game 7 of their first-round playoff series. Boston had never won a playoff series after trailing 0-2 in 26 tries.
Boston Bruins right wing Nathan Horton, center, smiles as he is surrounded by teammates after scoring the game-winning goal against the Montreal Canadiens during the overtime period in Game 7 of a first-round NHL Stanley Cup hockey playoff series in Boston, Wednesday, April 27, 2011. (AP Photo/Charles Krupa)
2014: Kerri Walsh wins record 47th world tour title
2014 — Three-time Olympic champion Kerri Walsh wins her record 47th FIVB Beach Volleyball World Tour title, teaming with April Ross to beat Brazil's Juliana Felisberta Silva and Maria Antonelli 21-11, 21-18 in the Fuzhou Open final.
In this March 22, 2016, file photo, Kerri Walsh Jennings speaks to reporters during a news conference in New York. (AP Photo/Mary Altaffer, File)
2014: Lydia Ko birdies final hole for first professional LPGA victory
2014 — Lydia Ko birdies the final hole for her third LPGA Tour victory and first as a professional, holding off Stacy Lewis and Jenny Shin in the inaugural Swinging Skirts LPGA Classic. Ko earns $270,000, celebrating on the 18th green three days after celebrating her 17th birthday.
Lydia Ko of New Zealand reacts on the 18th green of the Lake Merced Golf Club after winning the Swinging Skirts LPGA Classic golf tournament on Sunday, April 27, 2014, in Daly City, Calif. Ko won the event after shooting a 3-under-par 69 to finish at 12-under-par. At left is her caddie Domingo Jojola. (AP Photo/Eric Risberg)
These non-virus headlines are in the news this morning: South Korea maintains Kim Jong Un health rumors are untrue; Trump sticks with his base in reelection run; and a Tulane hoops star is charged with murder. Get caught up with a full recap of today's non-virus news.