The math is pretty simple if you wish for results that insure RU makes the Big 10 tournament (see my thread on the various tie-breaking scenarios):
1) The worst case is RU having 13 Big 10 losses. So ... root for Northwestern, Washington and USC to have 13 losses, or more, and Penn St to have 14 losses. PSU and Washington each have 12 losses now, and NW 11. PSU has @Indiana, home vs Maryland, @ Wisconsin - so 2 losses seem very possible, maybe even likely. If Washington loses just 1 more game, RU would win that tiebreaker (they have 4 games left, @Wisconsin, Indiana, @USC and Oregon) - so at least 1 more loss would seem likely. NW has 4 more games and currently 11 losses (@Minny, Iowa, UCLA and @Maryland) ... 1 loss would seem very likely, 2 very possible - or more.
2) If you want RU to have a better seed, rather than MERELY worry about making the Big 10 tournament, then in addition to rooting for RU to win as many of the 3 left as possible, root against USC and Minnesota, in particular (including an RU win over Minny) ... and maybe Indiana and Ohio St (though those last 2 have a tiebreaker over RU in one on one ties) ... and for a long-shot, root against Nebraska (over whom RU owns the one on one tiebreaker).