Wolfsbane vs. M: Please, this isn't even a fight.
M mops the floor with dog-breath Rahne
Sabertooth vs. Colossus: Is this adamantium claws Sabretooth? Because if he is then he wins, if not, I choose
Colossus.
Psylocke vs. Cannonball: Can Betsy's tk withstand his attacks? Well since it was strong enough to withstand an attack by a Shi'ar fleet, I'd say yes. Heck, her tk can shatter mountains, I think
Betsy wins.
Cyclops vs. Lifeguard: Lifeguard can adapt to anything, imagine her forming an armor of ruby quartz around her body and boom, Cyclops's beams no longer affect her. I gotta go with
Heather here.
Dazzler vs. Havok: Didn't we do this already?
Dazzler dazzles him and fires a laser bolt at him and boom, bye bye Summers.
Iceman vs. Magma: At last the one foe he can't overcome.
Magma will bury herself deep within the earth crust to prevent him from darining her body and create a series of volcanos around Iceman, evaporating his water body into nothingness.
Polaris vs. Emma: Emma will try to take over her mind, as so many others have in the past, but in that crucial second,
Lorna can skewer her with a piece of metal.
Nightcrawler vs. Bishop: Again,
Kurt can teleport his head off