PHOTO: Tom Larson/CNN
Now playing
00:45
Changes announced in wake of the deaths of 22 horses
Now playing
02:43
Senate sends Covid-19 relief bill back to the House for final vote
PHOTO: Getty Images
Now playing
01:55
CDC releases new guidelines for fully vaccinated individuals
PHOTO: Axios/HBO
Now playing
01:42
Sen. Graham: Trump can make GOP stronger or 'destroy it'
PHOTO: Courtesy of Harpo Productions/CBS
Now playing
03:23
Meghan: I didn't want to be alive anymore
PHOTO: Fresno Police Department
Now playing
03:54
New video: Man told officers 'I can't breathe' before his death
WASHINGTON, DC - MAY 2: New York Governor Andrew Cuomo holds a news conference at the National Press Club May 27, 2020 in Washington, DC. Following a closed-door meeting with President Donald Trump at the White House, Cuomo leveled criticism at Republican senators and other politicians that he said want to limit federal aid for New York to combat and recover from the coronavirus pandemic. (Photo by Chip Somodevilla/Getty Images)
PHOTO: Chip Somodevilla/Getty Images
WASHINGTON, DC - MAY 2: New York Governor Andrew Cuomo holds a news conference at the National Press Club May 27, 2020 in Washington, DC. Following a closed-door meeting with President Donald Trump at the White House, Cuomo leveled criticism at Republican senators and other politicians that he said want to limit federal aid for New York to combat and recover from the coronavirus pandemic. (Photo by Chip Somodevilla/Getty Images)
Now playing
03:21
New York state senate majority leader calls on Cuomo to resign
PHOTO: CNN
Now playing
01:26
Sen. Joe Manchin explains why he wanted changes to relief bill
WASHINGTON, DC - MARCH 06: President Joe Biden speaks from the State Dining Room following the passage of the American Rescue Plan in the U.S. Senate at the White House on March 6, 2021 in Washington, DC. The Senate passed the latest COVID-19 relief bill by 50 to 49 on a party-line vote, after an all-night session. (Photo by Samuel Corum/Getty Images)
PHOTO: Samuel Corum/Getty Images
WASHINGTON, DC - MARCH 06: President Joe Biden speaks from the State Dining Room following the passage of the American Rescue Plan in the U.S. Senate at the White House on March 6, 2021 in Washington, DC. The Senate passed the latest COVID-19 relief bill by 50 to 49 on a party-line vote, after an all-night session. (Photo by Samuel Corum/Getty Images)
Now playing
01:36
Biden spokesperson: President doesn't want to end the filibuster
Now playing
02:29
MS gov. encourages residents to wear masks despite dropping mandate
Now playing
02:18
Town previously overrun by ISIS prepares to host Pope Francis
Biden 03062021
PHOTO: CNN
Biden 03062021
Now playing
02:28
'Help is on the way': Biden speaks after Senate passes relief plan
Sen. Lisa Murkowski (R-AK) asks a question at a hearing of the Senate Health, Education, Labor and Pensions Committee on September 23, 2020 in Washington, DC.
PHOTO: Alex Edelman/Pool/Getty Images
Sen. Lisa Murkowski (R-AK) asks a question at a hearing of the Senate Health, Education, Labor and Pensions Committee on September 23, 2020 in Washington, DC.
Now playing
01:40
Trump plans to campaign against Sen. Murkowski in 2022
01 senate stimulus bill 210306
PHOTO: Senate TV
01 senate stimulus bill 210306
Now playing
01:47
Senate passes Biden's $1.9 trillion Covid-19 relief bill
Pope Francis meets with Iraq's leading Shiite cleric, Grand Ayatollah Ali al-Sistani in Najaf, Iraq, Saturday, March 6, 2021. The closed-door meeting was expected to touch on issues plaguing Iraq's Christian minority. Al-Sistani is a deeply revered figure in Shiite-majority Iraq and and his opinions on religious matters are sought by Shiites worldwide.
PHOTO: Vatican Media/AP
Pope Francis meets with Iraq's leading Shiite cleric, Grand Ayatollah Ali al-Sistani in Najaf, Iraq, Saturday, March 6, 2021. The closed-door meeting was expected to touch on issues plaguing Iraq's Christian minority. Al-Sistani is a deeply revered figure in Shiite-majority Iraq and and his opinions on religious matters are sought by Shiites worldwide.
Now playing
01:42
Pope Francis holds historic meeting with revered Shia cleric
WASHINGTON, DC - MARCH 05: Sen. John Cornyn (R) (R-TX) talks with Sen. Joe Manchin (D-WV) while walking to the U.S. Senate chamber for a vote March 05, 2021 in Washington, DC. The Senate continues to debate the latest COVID-19 relief bill.  (Photo by Win McNamee/Getty Images)
PHOTO: Win McNamee/Getty Images
WASHINGTON, DC - MARCH 05: Sen. John Cornyn (R) (R-TX) talks with Sen. Joe Manchin (D-WV) while walking to the U.S. Senate chamber for a vote March 05, 2021 in Washington, DC. The Senate continues to debate the latest COVID-19 relief bill. (Photo by Win McNamee/Getty Images)
Now playing
02:54
Axelrod breaks down Manchin's surprising move
sinema
PHOTO: CNN
sinema
Now playing
01:50
Senator's move has many on the internet outraged
(CNN) —  

Racing resumed Friday at Santa Anita Park after 22 horses died this season.

The famed track near Los Angeles was closed to racing March 5.

On Thursday, the California Horse Racing Board limited the use of whips and approved changes to medication rules. Park owners and the Thoroughbred Owners of California had agreed earlier “to protect the safety and welfare of horses and riders in the state,” said a statement from the Stronach Group, the park’s owner.

Santa Anita Park was shut down earlier this month after Let's Light the Way had to be euthanized.
PHOTO: Courtesy Debbie McAnally
Santa Anita Park was shut down earlier this month after Let's Light the Way had to be euthanized.

Since late December, 22 horses have died at Santa Anita in Arcadia, California. Ten died during the same period last year.

There were no horse deaths on Friday when racing resumed, Mike Marten from the California Horse Racing Board told CNN.

The Los Angeles County district attorney’s office assigned investigators to look into the horse deaths this month.

On Thursday, a group representing jockeys argued against whip restrictions, CNN affiliate KTLA reported. The representatives said whips were not connected to any of the deaths.

But two board members said they saw whips being overused on some of the horses that died.

“Going after a horse with a whip when it was obvious that the horse in question had nothing left to give is something I never want to see again,” said Madeline Auerbach, the racing board’s vice chair, KTLA reported.

The Stronach Group, which also owns Golden Gate Fields, said the agreement “enacts the most stringent medication policy in North America.”

Santa Anita issued a statement on the deal Thursday.

“Horses will race with no race day medication with the exception of the diuretic Lasix, which will still be permitted, but at a maximum of 50% of the previous levels,” the statement said. “Additionally, all horses born in or after 2018 will race at Santa Anita and Golden Gate will do so with no race day medication, including Lasix. This means all two-year-old horses starting in 2020 and after will be racing medication free.”

The park dates back to 1907 and was featured in the 2003 movie “Seabiscuit.”

Stronach Chief Operating Officer Tim Ritvo said, “The horses are the one thing that unifies us all. We are looking forward to welcoming everyone back to Santa Anita (Friday).”