Leicester Tigers produced an astonishing final 10 minutes to steal a dramatic 32-23 victory over London Irish at Welford Road and seal top spot in the Aviva Premiership and a home semi-final against local rivals Northampton.
The Tigers came into the match knowing a win and bonus point would ensure top spot, but they made far too many basic errors, gifting London Irish winger Topsy Ojo with two intercept tries while missing countless chances of their own.
They trailed 23-13 with just 10 minutes to go before scoring four tries to record a stunning victory and leave London Irish devastated.
First, replacement winger Horacio Agulla raced over on the right after a flowing attacking move.
That lifted the team and the crowd, and three minutes later a try by impressive inside centre Anthony Allen left his side just three points adrift with Toby Flood's conversion.
And it was Tom Croft who put his side into the lead at 25-23, making amends for being put into touch after crossing the line in the first half.
It was left to Alesana Tuilagi, the Premiership's top try-scorer, to wrap up the comeback by outstripping the cover defence on the left to score his 12th try of the campaign, with Flood converting.