The visitors were left hanging on after Son Heung-min was sent off in the 79th minute for a late challenge on Gomes. Both sets of players appeared shaken at the extent of the injury to Gomes' right ankle as medics treated the Portuguese midfielder before he was stretchered off and taken by ambulance to Aintree Hospital in Liverpool.

Gomes will undergo surgery on Monday after "it was confirmed he had suffered a fracture dislocation to his right ankle," Everton said in a statement late Sunday.

TV replays suggested Gomes landed awkwardly after Son's challenge. Referee Martin Atkinson initially showed Son a yellow card, then changed it to red and the Spurs forward left the field in tears.

Son had earlier capitalized on a mislaid pass from Everton defender Alex Iwobi to slide in Deli Alli, who surged past a defender before opening the scoring in the 63rd.

Everton might have had a penalty after Alli appeared to handle the ball in the 70th but a lengthy VAR check went against the Toffees.

The hosts pushed for the equalizer after Son's sending off and it came in the 97th minute, when Tosun headed in from close range after Lucas Digne crossed.

After the match, Everton Fan Services posted that the club was looking into allegations of racism.

"Everton is investigating an alleged incident of racist behaviour by a supporter attending today's fixture against Tottenham," read a statement on Twitter.

Tottenham's Harry Kane missed the game through illness. Mauricio Pochettino played Lucas Moura in the England striker's place, with Ben Davies coming in for the suspended Danny Rose.

Spurs is 11th after 11 rounds with 13 points, two points more than 17th-place Everton.