Leicester boss Richard Cockerill says his side are "in with a fighting chance" of Heineken Cup glory if they can get past Toulouse next week.
Tigers fell two points behind Toulouse at the top of Pool Two after Sunday's 15-all draw with the Ospreys at Liberty Stadium, setting up a showdown at Welford Road next weekend, with only the group winners guaranteed a quarter-final place.
"We have set the occasion up for next week. That was our aim, and it should be a classic," said Cockerill.
"We are disappointed that we didn't win today and won't have a chance to be at home in the quarters, but we are set up for a winner-takes-all with Toulouse at Welford Road.
"(Against) anyone at Welford Road we will back ourselves to beat them. Toulouse are a very good side. We know they have got the class in their team, and they know how to win games.
"But if we get past Toulouse, and that's an if at this point, then we are in with a fighting chance.
"It was a very tight game. It was an arm-wrestle the whole time. We just weren't quite sharp enough today, which is a bit of a concern. We have got to be more accurate.
"If we had gone more than seven points behind I don't think we would have grabbed it back. Ospreys played very well, and credit to them. We couldn't have complained had they won."
Ospreys head coach Steve Tandy was obviously disappointed with the result.
"I thought we deserved more. It is a really deflated changing room," said Tandy.
"Most other teams would have thrown the towel in at 15-10 behind, but this group fights like no team I've seen or played in. They don't know when they are beaten, and they put in another massive shift today."