This is another in a season-long series on the Kansas City Chiefs search for a franchise quarterback. It appears weekly on Thursdays throughout the 2015 season. Bill Kenney had the numbers, some enormous numbers, over 4,348 passing yards in 1983, at the time the fourth best total in NFL history. The offense improved under Mackovic but the record didn’t. A 6-10 mark wasn’t going to turn the tide of public support. The following year bettered it at 8-8, but the next year it was back to 6-10. Under Mackovic’s tutelege, Kenney was throwing the ball more than 40 times a game (upping it to more than 50 as the 1983 season wound down) and breaking a number of the Chiefs’ single-season passing records.