The Riders look to end a three game losing streak and regain a share of first in the West as they start a home and home with a Calgary team that has won four in a row at a sold out stadium on Friday night. The Riders are making two changes to their lineup as running back Hugh Charles and receiver Chris Getzlaf come on the roster for Vincent Marshall and Sebastian Clovis. Michael Bishop gets the start at quarterback but head coach Ken Miller saying Thursday he will not hesitate to pull Bishop for Darian Durant if circumstances should warrant it. Bishop has looked uneasy since joining the Riders to start games and Miller says its something that has been discussed between the two and its his hope that the problem is over. Game time is 8 o'clock.