Fajardo, in his second career start, completed 24-of-31 passes for 430 yards and two touchdowns (including a 98-yarder to Kyran Moore) as the Roughriders beat the Toronto Argonauts 32-7 on Canada Day. Fajardo also rushed for a touchdown.
Rogers had nine catches for 100 yards and three touchdowns, including the game-winner, as the Stamps rallied to beat the B.C. Lions 36-32 on Saturday.
Davis had three sacks, seven defensive tackles, a tackle for a loss and a pass knockdown in a 41-10 win over the Montreal Alouettes on Friday.
Through three weeks, no player has earned more than one top-performer honour.