Quarterback Shawn Robinson is facing surgery that is expected to end his season. And TCU receiver and standout returner KaVontae Turpin was suspended from the team Monday after his arrest over the weekend on an assault charge for an alleged altercation with his girlfriend.

Two days after a midgame switch at QB, coach Gary Patterson said Monday his sophomore quarterback will have surgery and that former Penn transfer Michael Collins will get his first start Saturday at Kansas.

“We have no choice really, Shawn’s been trying to play through (an injury),” Patterson said during the Big 12 coaches weekly conference call.

Patterson did not say what surgery Robinson would have, but the decision comes more than three weeks after the quarterback took a direct shot on his non-throwing left shoulder and had to be helped off the field in the closing seconds of a 17-14 win over Iowa State on Sept. 29.

Robinson played all of the following game Oct. 11 against Texas Tech, but was replaced by Collins after the first three series Saturday in a 52-27 loss to Oklahoma.

TCU (3-4) trailed 28-7 midway through the second quarter when Collins, also a sophomore, replaced Robinson. The Horned Frogs had only 25 total yards before the switch, and their only score was Turpin’s 99-yard kickoff return.

According to an arrest affidavit, Turpin was charged with assault causing bodily injury to a family member after Fort Worth police responded to a domestic disturbance call at an off-campus apartment complex late Saturday.

Patterson said he was still gathering information and that Turpin probably won’t play Saturday at KU. The senior receiver is suspended indefinitely.

The woman said Turpin was angry because he believed that she had sent photos of herself to other people.

Police said a witness who lived at the complex said he and two friends heard screaming in the parking lot and then saw Turpin “manhandle” the woman “by grabbing her from behind with one arm across her neck, her feet dragging as she kicked and yelled at him,” according to the affidavit.

The arresting officer said in the affidavit that Turpin refused to talk to him about what occurred at the complex and was placed in the back of a patrol car. There was no immediate information on an attorney for Turpin, who could face up to a year in prison and a $4,000 fine if convicted of the Class A misdemeanor.

The university, not the athletic department, released a statement that the school was aware that one of its students had been arrested for a reported domestic situation.

“The university takes these types of reports very seriously and is continuing to gather information to determine next steps,” the statement read. “TCU expects its students to behave in an ethical manner, abide by campus policies and adhere to state and federal law. The student also may face a charge of violating the University Code of Student Conduct, the results of which are independent and separate from any legal charges.”