The pair were consistently dangerous in the Lions' decisive 41-5 win over Montreal on Saturday. Arceneaux caught eight receptions for 145 yards and a career-high three touchdowns, while Winnipeg native Harris had four receptions for 78 yards and a touchdown and 12 carries for 72 yards.
Harris currently is the league leader in rushing yards with 273 yards, sits third in the league in receiving yards with 245 and is tied for second in the league with three touchdowns.
Edmonton defensive end Odell Willis is the defensive player of the week. He recorded his first career interception and returned it for his first career touchdown in the Eskimos' 26-3 win over the Winnipeg Blue Bombers on Thursday. He also had two tackles, including a sack.
Ottawa Redblacks kicker and punter Brett Maher is the special teams player of the week. Maher hit a 27-yard field goal with under a minute to play in the game as the Redblacks earned their first franchise win, beating the Toronto Argonauts 18-17 on Friday.
Maher also kicked field goals from 48, 32, 30, 26 and 22 yards.