Two SYTYCD Dancers Unable to Perform on Tonight’s Show

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 Joe Viles/FOX

The reality dance show curse has struck again!

As So You Think You Can Dance is set to air its first Top 20 performance round Tuesday night, Usmagazine.com has learned that two dancers will be sitting out the round.

Billy Bell, the contemporary dancer whose New Orleans audition brought new judge Adam Shankman to tears, dropped out of the show due to an illness Us has learned is mononucleosis. He will be replaced by hip-hop dancer Brandon Dumlao.

In a statement released Monday, SYTYCD executive producer Nigel Lythgoe did not elaborate on the nature of Bell's illness, but wished the Julliard-trained 19-year-old well.

"We are disappointed that Billy cannot continue dancing in the competition on the advice of his doctor and wish him a speedy recovery," Lythgoe said. "However, we are fortunate that Brandon Dumlao has agreed to return."

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Fans were able to see Bell perform Monday in a pre-taped, non-elimination round that also featured Noelle Marsh, who may have danced for the last time on the SYTYCD stage.

A source tells Us that Marsh will not be competing tonight after suffering an ankle injury that could sideline her for the duration of the competition.

Marsh, an 18-year-old contemporary dancer, will be given one week to try and recuperate, according to the network's standards and practices laws. The source tells Us that production crews will prep the female dancer who gets eliminated this week to go on in her place should she not be able to recover.

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