Sparks made 27 saves Thursday in a 5-4 overtime loss to the Red Wings.
Sparks will get the starting nod at home versus Detroit on Thursday, Terry Koshan of The Toronto Sun reports.
Sparks will start in goal Friday, taking on the Ducks in Anaheim for the second half of the back-to-back set, Lance Hornby of The Toronto Sun reports.
Sparks stopped 33 of 34 shots in Monday's 4-1 win over the Kings.
Sparks will be between the pipes at home against the Kings on Monday, Kristen Shilton of TSN reports.
Sparks was beaten six times on 31 shots, in Sunday's 7-6 win over the Blackhawks.
Sparks appears to have secured the No. 2 job after Curtis McElhinney was waived by the club Monday.
Sparks must clear waivers to be assigned to the AHL and could become a trade option before opening night, according to Toronto's Sportsnet590 The FAN.
Sparks allowed five goals on 36 shots in Monday's 5-1 preseason loss to Montreal.
Sparks allowed three goals on 12 shots in Friday's 5-3 preseason win over the Sabres.