Roma's Mats Hummels celebrates at the end of the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Roma's Mats Hummels, right, celebrates with his teammates after scoring his side's 2nd goal during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Roma's Gianluca Mancini goes for a header during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Roma's Angelino, left, and Tottenham's Dominic Solanke vie for the ball during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Roma's Angelino reacts after missing a scoring chance during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Roma's Manu Kone, right, and Tottenham's Dejan Kulusevski vie for the ball during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Tottenham's Pape Matar Sarr attempts a score during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Tottenham's Brennan Johnson celebrates after scoring his side's 2nd goal during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Tottenham's Son Heung-min, right and Roma's Evan Ndicka vie for the ball during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.

Tottenham's Son Heung-min celebrates after scoring the opening goal on a penalty kick during the Europa League opening phase soccer match between Tottenham Hotspur and Roma at the Tottenham Hotspur Stadium in London.