Liverpool made to work hard for record-equalling win over West Ham

Jurgen Klopp's double substitution after 70 minutes did the trick

Liverpool's Diogo Jota (right) scores his side's second goal of the game 

Premier League: Liverpool 2 West Ham 1

Diogo Jota scored for the third consecutive game to put Liverpool on top of the table for the first time this season as they equalled the club record for unbeaten home games.