The two that I remember were Bradley Dean in Company('06) for Raul Esparza. Dean went on for one weekend due to a scheduled absence by Esparza. And also Keith Reddin, who was David Hyde Pierce's standby in "Vanya and Sonia and Masha and Spike". Reddin never went on.
A Chorus Line revival played its final Broadway performance on August 17, 2008. The tour played its final performance on August 21, 2011. A new non-equity tour started in October 2012 played its final performance on March 23, 2013. Another non-equity tour launched on January 20, 2018. The tour ended its US run in Kansas City and then toured throughout Japan August & September 2018.