London Irish came from 25 points down to earn a record-breaking fifth Premiership draw of the season with a last-gasp penalty try against Wasps.
Trailing 39-14 after 67 minutes, Tom Pearson, Henry Arundel and Ollie-Hassell Collins scored before a penalty try was given for a maul infringement.
Wasps had the ball on the hooter when leading but could not find touch.
The result all-but ends the visitors' play-off hopes, with both sides still batting for a Champions Cup place.
More to follow.
London Irish: Parton; Rowe, Rona, Van Rensburg, Hassell-Collins; Jackson, Phipps; Goodrick-Clarke, Creevy, Hoskins, Nott, Simmons, Rogerson (capt), Pearson, O'Brien.
Replacements: Cornish, Gigena, Parker, Mafi, Tuisue, White, Joseph, Arundell.
Wasps: Kibirige; Hougaard, Fekitoa, Gopperth, Bassett; Atkinson, Robson; West, Oghre, Alo, Launchbury (capt), Stooke, Shields, J Willis, T Willis.
Replacements: Frost, Harris, Millar-Mills, Gaskell, Young, Porter, Umaga, Odogwu.