The Spain global has been at City since July 2010 and has since amassed 346 appearances across all competitions, scoring 61 goals and providing a staggering 115 assists.
Mahrez, who arrived from Leicester City in a £60million deal, went down early under a challenge and the Algeria star failed to shake off the problem before the half-hour mark in Miami.
"I'm happy with Phil Foden because he played an outstanding game today". We will see which players we have for the final against Chelsea, how many players and in which condition, we will see, and then comes the start.
"English people love that type of football - those type of games".
The Egypt global, who was Liverpool's top scorer last season with 44 goals in 52 appearances across all competitions, suffered a shoulder injury in the club's Champions League final defeat by Real Madrid in May. "We are late, we know it, but if we play like we did today, with this spirit against an awesome team, the future will be so good".
"To win consecutive leagues is going to be very hard but we're going to try. We have five or six days until the Community Shield and I don't know which players will be able to play, but I am so satisfied with these games".
Guardiola, who has also spent vast sums on his team since joining City in 2016 and won the league last season with a record 100 points, did not criticise Klopp's approach ahead of a friendly between the two clubs in NY on Wednesday.
He was quoted on the Manchester City official website as saying: "It was incredible, what we did. We can not only go for a 1-0 here, 1-0 there - I know if you win silverware in the end then people are probably happy, but the whole year was still rubbish". "Still, he is far away from his best".
But the Spaniard spoke highly of his young squad's performance against his former club.
"For 75 incredible minutes, the players were so exhausted but worked so hard and for the last part of the game Liverpool brought on incredible quality and deserved to score the goals in the end".
Substitute Bernardo Silva replaced Riyad Miahrez, who picked up an ankle knock, in the 27th minute and he brought Pep Guardiola's young side back into the game in stoppage time at the end of the first half before Lukas Nmecha (51) levelled the scores after the break.