LONDON (AP) - Kelechi Iheanacho grabbed a first-half double as Premier League team Leicester beat third-tier Peterborough 5-1 Saturday in the FA Cup fourth round.
Fousseni Diabate also scored twice on a promising debut, with Wilfred Ndidi completing the scoresheet.
Andrew Hughes got a consolation goal for Peterborough at London Road.
Fourth-tier Newport hosts Tottenham later Saturday and Liverpool faces visiting West Bromwich Albion.
Claude Puel made 10 changes from the Leicester side that beat Watford in the Premier League last week with Jamie Vardy and Riyad Mahrez both named on the bench.
Despite driving rain, the Foxes were a goal ahead with just nine minutes gone after Peterborough gave the ball away following a sloppy throw-in. Iheanacho slid the ball through to Diabate, and the 22-year-old forward, who arrived at Leicester from Ligue 2 club Gazelec Ajaccio earlier this month, drove into the box before prodding home with his left foot.
It was to get even worse for the hosts just three minutes later after Chris Forrester gifted the ball to Iheanacho deep inside the home side's half. The former Manchester City forward had options to his left, but he chose to go alone, curling his left-footed strike into the bottom corner.
Leicester put the game firmly out of reach shortly before the half-hour mark when Iheanacho netted his second of an impressive afternoon, volleying home from six yards (meters) out.
The Nigerian has become an FA Cup specialist in recent seasons with his first-half double here taking him to nine in the last two years. No other player has more in the competition.
Peterborough rallied in the second half and pulled a goal back after 57 minutes when Hughes scored from a corner. It was the first goal Leicester has conceded this year.
Diabate completed a fine debut when he added a fourth after 87 minutes before substitute Ndidi fired home with the final kick of the match.
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(Joe Giddens/PA via AP). Leicester City's Kelechi Iheanacho, right, celebrates scoring his side's second goal of the game against Peterborough United with Danny Simpson during the English FA Cup, fourth round soccer match at The ABAX Stadium, Peterboro...
(Joe Giddens/PA via AP). Leicester City's Adrien Silva battles for the ball with Peterborough United's Danny Lloyd, right, and Anthony Grant during the English FA Cup, fourth round soccer match at The ABAX Stadium, Peterborough, England, Saturday Jan. ...
(Joe Giddens/PA via AP). Leicester City's Fousseni Diabate, right, celebrates scoring his side's first goal of the game against Peterborough United with teammates during the English FA Cup, fourth round soccer match at The ABAX Stadium, Peterborough, E...
(Joe Giddens/PA via AP). Peterborough United manager Grant McCann watches the English FA Cup, fourth round soccer match against Leicester City at The ABAX Stadium, Peterborough, England, Saturday Jan. 27, 2018.
(Joe Giddens/PA via AP). Leicester City manager Claude Puel watches the English FA Cup, fourth round soccer match against Peterborough United at The ABAX Stadium, Peterborough, England, Saturday Jan. 27, 2018.