Seeing double (times two)! San Francisco Giants star's wife and her twin sister give birth to sons on the SAME DAY at the same hospital

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The wife of San Francisco Giants shortstop Brandon Crawford and her twin sister had doctors at an Arizona hospital seeing double when they both delivered sons on the same day in June.

Jalynne Crawford and Janelle Leopoldo each had a C-section performed by the same doctor just two hours apart.

Bryson Ryder Crawford is Jalynne and Brandon's fourth child: they also have daughters Jayden and Braylyn, and son Braxton.

Double the fun: Twin sisters Jalynne Crawford (left) and Janelle Leopoldo (right) in June delivered sons on the same day at the same Arizona hospital 

Twa-sins! Jalynne (left) is pictured with her fourth child, Bryson, beside her sister and her second child, Jace (right)

San Francisco Giants shortstop Brandon Crawford celebrated his son's birth on Twitter

Jace Alan Leopoldo is Janelle and Jason Leopoldo's second son, who was conceived with the aid of in vitro fertilization.

Both Crawford and Leopoldo had struggled with fertility issues, with the former suffering two miscarriages and the latter losing one baby.

The back-to-back deliveries on June 18 came after an especially tough year for the family: Crawford and Leopoldo's sister Jennifer Dantzscher Pippin died of an asthma attack in April 2017, aged 38, leaving behind a husband and two daughters.

‘We said Jennifer was in heaven and would pick our two babies for us,’ Crawford told Good Morning America.

Around the same time, their other sister Jamie Dantzscher, a former artistic gymnast who was on the bronze-medal-winning team at the 2000 Olympics in Sydney, testified before the US Congress about the sexual abuse committed by USA Gymnastics' national team doctor Larry Nassar, who was later convicted and sentenced to up to 175 years in prison.

Doing everything together: Jalynne also has two older daughters and a son, and Janelle has one older son 

Tough year: In 2017, Jalynne and Janelle lost their sister Jennifer (left) to an asthma attack. Their other sister Jamie Dantzscher (right) in March testified about being sexually abused by USA Gymnastics' national team doctor Larry Nassar

Both Janelle and Jalynne also competed on the UCLA gymnastics team while attending college on gymnastics scholarships. Like most twins, they have always shared a special bond that lasted into adulthood.

‘Our family is extremely close and spend a lot of time together, but there is a difference with Jalynne and me,’ Leopoldo said. ‘Our husbands joke, “If you marry one, you marry the other” in the sense that we love being together so much and talking so much. 

'We feel when we are apart, there is a piece of us missing. Our kids already feel this bond as well.’

Even though Janelle lives and works as a first-grade teacher in California, and Jalynne lives in Scottsdale, Arizona, the sisters fly back and forth to see each other every three weeks.

During the sisters’ third trimester, the Leopoldos moved in with the Crawfords and lived together in Scottsdale for three weeks leading up to the due date.

Party of five: The Crawfords welcomed their youngest son after suffering two miscarriages 

Happy together: Janelle was able to conceive Jace through in vitro fertilization after suffering a miscarriage of her own  

The twins and their rambunctious brood attended a Giants game just two weeks after Bryson and Jace's birth  

‘When we approached the doctor about having the babies on the same day, he said it was fine, they were the same gestational age and due within a week of one another,’ Crawford told GMA.

Crawford, who is two minutes older than Leopoldo and found out she was pregnant four days before her sister, got to 'go first,’ giving her husband the chance to spend a few extra hours with her and their newborn son during his brief paternity leave from the San Francisco Giants.

After undergoing their scheduled C-sections, the sisters were given rooms next door at the hospital and spent the next two days visiting each other.

Brandon Crawford later wrote in an entry on San Francisco Giants' blog, Splash Hits, that Jalynne’s doctor told them it was a first for him: delivering babies of twin sisters on the same day, back to back.

The Giants shortstop also revealed that his sister Jenna has already coined a term for Bryson and Jace: ‘twa-sins’, which stands for ‘twin cousins.’

On her Instagram page, Jalynne wrote gushingly about sharing her son’s birth with her sister.

‘This was one of the best experiences of my life!’ she said in a caption accompanying a photo from the hospital showing her beside her sister with their babies and husbands. ‘Bryson and Jace will have a special bond and always share their birthday!’