When he visited the mound one pitch later, he knew. Mateo injured his elbow, and it is serious enough to warrant an MRI, most likely in Chicago. Quade did not know the extent of the injury when he met with the media after the Cubs' 5-4 loss to the Nationals, but appeared prepared for a difficult prognosis.
Mateo will be placed on the disabled list, according to the Chicago Tribune.
"No, [it didn't look good]," Quade said. "We'll find out about that in due time. I don't know if [I'll need another reliever] ... but we may."
Mateo faced two batters in the 10th inning at Nationals Park, walking Werth and allowing pinch-hitter Livan Hernandez to sacrifice Werth to second. Carlos Marmol took over for him and allowed Werth to score on a wild pitch, but Mateo took the loss.
The Cubs have to make a roster move to create room for Ramon Ortiz, who will start Tuesday. Casey Coleman, who Chicago recalled from Triple-A Iowa to start Monday could also stick around, but Quade would prefer he gets regular starts.
But there will be a roster move Tuesday, and Mateo suddenly became an option.
"Given what just took place and everything else, we have to find a spot, and maybe it's even easier now," Quade said.