Mikel Arteta’s men dominated the game early on and were rewarded by Martinelli’s close-range opener from a corner kick.
In the second half, Palace started the game much better, but missed the deserved equalizer before the decision was made shortly before the end.
Liverpool FC and team manager Jürgen Klopp meet in their first game on Saturday (1:30 p.m. in live ticker) on promoted FC Fulham, defending champions Manchester City will face West Ham United the following day (5:30 p.m.).
Klopp repeats criticism: “Then I get really angry”