Leicester missed the chance to go five points clear at the top of the Premier League as West Brom came from behind to claim a thrilling draw.
Salomon Rondon shrugged off Robert Huth to give West Brom the lead, but a Danny Drinkwater deflected shot levelled it.
Andy King finished a wonderful move to put Leicester ahead only for Craig Gardner to equalise with a free-kick.
Leicester twice hit the bar at a raucous King Power Stadium, but could not find a winner.
The draw leaves the Foxes three points ahead of Tottenham, who can go top with victory at West Ham on Wednesday, and six ahead of Arsenal, who face Swansea.
“We made a lot of chances, but the ball didn’t want to go inside. This is football,” Leicester manager Claudio Ranieri told Sky Sports.
“But I’m more happy now than after the match against Norwich. Tonight we played much, much, much better.
“We believe in ourselves and we continue to fight. Until the end, every match is important to us.”
Ranieri made two changes to the team that had edged Norwich City 1-0 at the weekend, Danny Simpson and King replacing Daniel Amartey and the injured N’Golo Kante, and saw his side fall behind in the 11th minute.
West Brom, who have now lost only two of their past 10 league games, stay 13th – 12 points clear of the relegation zone.