The fourth weekend of MLS action is here and still features some teams without a blemish on their season, while others look to prove themselves. After three weeks, no teams have looked better than the perfect-record Vancouver Whitecaps FC and Philadelphia Union.

It'll be a quick turnaround for Miami, as they are set to face Cavalier FC in Jamaica in the second leg of their Round of 16 tie on Thursday. Messi has not played a part in either of his side's last three games, but the Herons have been rolling without their captain, currently riding a four-game winning streak in all competitions.

Lionel Messi is expected to return to MLS action for Inter Miami CF after missing matches against the Houston Dynamo and Charlotte FC.