Arguably, the Kansas City Chiefs’ tandem of quarterback Patrick Mahomes and receiver Tyreek Hill last week outplayed Pittsburgh Steelers quarterback Ben Roethlisberger and running back James Conner.That sets up a marquee matchup when the teams meet Sunday at Heinz Field.Mahomes was 15 of 27 for 256 yards, four touchdowns and no interceptions as the Chiefs (1-0) opened the 2018 season with a 38-28 win over the Los Angeles Chargers. One of the 22-year-old quarterback’s favorite targets was Hill, who had seven catches for 169 yards and two touchdowns, plus a 91-yard punt return for another six points.”He does a nice job,” Chiefs coach Andy Reid said of Hill. “He’s fast, and he’s quick. He’s surrounded by some good guys, so it’s hard to double him.”Hill turned things around onto Mahomes, who was named AFC Offensive Player of the Week for his performance.”He’s very comfortable,” Hill said. “Every time Pat steps into the huddle, he’s very confident. He’s like, ‘OK guys, let’s drive this ball down their throat.’ As a receiver or as a tight end or as a line, we’re like, ‘OK, we’ve got a great leader in our huddle.'”The Steelers (0-0-1), coming off a 21-21 tie at Cleveland, certainly took notice of Mahomes.”He’s a young guy,” said linebacker T.J. Watt, the AFC Defensive Player of the Week who had three sacks and 10 tackles against the Browns.”He’s got a good arm. He can also get out of the pocket. … I think we’ve just got to let him know we’re there early and make him stay in the pocket and make him use his arm strength.”Roethlisberger, a two-time Super Bowl champion, doesn’t have to prove himself, but he could use a steadier game this week. He threw for 335 yards and a touchdown against Cleveland, but his three interceptions accounted for half of Pittsburgh’s six turnovers.Conner had a costly turnover on a fumble, a blemish on an otherwise strong first NFL start. Replacing Le’Veon Bell, who has not reported or signed the Steelers’ franchise tag tender and has been removed from the depth chart, Conner rushed for 135 yards and his first two career touchdowns.The Steelers led 21-7 and had the ball with 7:44 left in regulation, so the outcome didn’t feel like a tie.