Oldham won their Greater Manchester derby against Swinton Lions 28-20 at Bower Fold.
Swinton Lions booked their place in the Third Round of the Challenge Cup after a 23-14 win over Oldham at Heywood Road.
All four Challenge Cup Second Round ties will be streamed live and free next weekend.
Oldham bounced back from back-to-back defeats in pre-season to book their place in the Challenge Cup Second Round, after a 20-6 victory over Barrow Raiders at Bower Fold.
Halifax Panthers opened their account in 2021 with a 30-16 victory over Oldham in a pre-season friendly at Bower Fold.
The Championship have announced the schedule for round two through to round four, with 20 matches to be streamed live on OuRLeague.
Featherstone Rovers marked their first match in over a year with a comprehensive 54-10 victory over Oldham at the Millenium Stadium.
The RFL have confirmed that the Championship and League 1 seasons will include promotion and relegation.
Featherstone Rovers welcome Oldham to the Millenium Stadium on Saturday, with both sides playing their first match in almost a year.
Oldham have announced the signing of hooker Declan Gregory, who has been training with the club since leaving Castleford Tigers.