An own goal from Mainz's Luca Kilia in the 86th minute handed Jurgen Klopp's side the win, with Liverpool giving game time to 23 different players over the course of the match.
Liverpool beat Osasuna with Firmino double in final preseason friendly
A heavily rotated Liverpool side beat Osasuna 3-1 in a preseason friendly at Anfield on Monday night ahead of the start of the Premier League.
Gareth Bale misses penalty, David Alaba debuts in Real Madrid preseason draw over AC Milan
Gareth Bale missed a penalty while David Alaba made his Real Madrid debut in their preseason goalless draw against AC Milan on Sunday in Austria.
Andy Robertson suffers injury in Liverpool preseason draw at Anfield
Liverpool suffered an injury scare to defender Andy Robertson in their 1-1 friendly draw against Athletic Bilbao on Sunday.
Son Heung-Min scores winner as Tottenham beat Arsenal in feisty friendly game
Son Heung-Min's 79th-minute strike gave Tottenham Hotspur a 1-0 win over north London rivals Arsenal in a feisty friendly on Sunday.
Manchester United thrash Everton in final preseason friendly
Manchester United ended their summer schedule with a comfortable 4-0 win over Everton at Old Trafford on Saturday.
Chelsea draw with Tottenham Hotspur after Hakim Ziyech double
Tottenham Hotspur fought back from two goals down to earn a 2-2 against Chelsea in an entertaining pre-season friendly at Stamford Bridge.