Arizona Cardinals fans were dealt terrible news regarding Marvin Harrison Jr. The rookie wide receiver was hit by a thigh in his head after he attempted to make a catch between two Green Bay Packers players. He got up but as soon as he did, he stumbled and collapsed. He left the field to be evaluated for a concussion.Unfortunately, insider Ian Rapoport reported that he has been ruled out for the rest of the game.Harrison didn't have the best game before he suffered the injury. He was targeted twice but didn't make a catch. The Cardinals finished the first half down 24-10 and have only scored three more points since.Tight end Trey McBride has led the team in receptions (five) and receiving yards (73), including a 27-yard play. Emari Demercado added 29 receiving yards on three receptions and Michael Wilson has caught two passes for 21 receiving yards and the Cardinals' lone touchdown score so far.The Cardinals are looking to win back-to-back games after beating the San Francisco 49ers with a remarkable second half in Week 5.Marvin Harrison Jr.'s numbers after five weeksMarvin Harrison Jr. has had a decent start to the NFL season, but he hasn't made a big impact on his team. The only game where he recorded over 100 receiving yards was the 41-10 blowout win over the LA Rams in Week 2. He caught four passes for 130 receiving yards and two touchdowns.In Week 1, he caught one pass for only four yards and in Week 3, he had his second-best performance of the season (five receptions for 64 yards and a touchdown). Week 4 wasn't as productive as he posted only 45 yards on five receptions but added another touchdown. He only had two receptions for 36 yards last week against the 49ers.Harrison isn't the only rookie WR who has suffered a concussion this season. New York Giants wideout Malik Nabers is set to miss his second straight game after failing to advance in his rehab process.