Ospreys failed to clinch a bonus point on Friday night but Tandy refused to criticise his players in any way after two tries from Morgan Allen ensured victory at the Liberty Stadium.
Next up for Ospreys is a trip to Thomond Park to face Munster, themselves chasing a top-four finish, and while Tandy knows the race for the play-offs will go to the wire he is adamant his players have the ability to not just make it but go all the way.
"We've got to focus on Munster now. We've just told the group that we do want them to be a bit more clinical, they've got to set their own standards," he said.
"Even though we've got people playing out of position, we've got people patched up, we've got young men making their debuts or with just one, two or three appearances behind them, we've got to go to Munster and pick up something and then hopefully we can kick on for the last five games.
"We fancy our chances against anyone, if we get to the top four at the end of the season we'll believe we can win this tournament.
"It's tough at the moment, with Glasgow's win there are probably four of us going after two places so we'll probably have to go away and win it on the road. We don't want to give up our title and we'll keep fighting to the bitter end, irrelevant of citings, injuries or international call-ups, we want to defend as best we can."