LA Galaxy's Romain Alessandrini out until September after knee surgery

Zlatan pulls the strings in another LA Galaxy win (2:16)

Two goals from Zlatan Ibrahimovic powered LA Galaxy past Philadelphia Union, extending their winning streak to four matches. (2:16)

LA Galaxy star Romain Alessandrini will be sidelined until September after undergoing his third knee operation, the club announced on Friday.

The Galaxy announced Friday that he damaged his cartilage two weeks ago against during a 2-0 win against the Philadelphia Union.

The 30-year-old French midfielder attempted to play through the injury last weekend against Houston but came off after 16 minutes. He had surgery Thursday in Santa Monica.

Alessandrini joined the Galaxy from Marseille in 2017 and quickly became one of their best players. The attacking midfielder scored 24 goals in 50 games during his first two seasons with the five-time MLS champions, and he teamed well with Zlatan Ibrahimovic after the Sweden star arrived last season.

Alessandrini had already missed a month of the 2019 season with a hamstring injury before his latest knee injury.