As is customary during the season, Richmond varsity coach Nick Persell had a word for the week for the Spartans to help them prepare this week to face St. Joseph Lafayette (0-1) Friday on the road in 11-man football action. That word was “execute.” “We just feel like, as long as we execute our jobs on both sides – offensively and defensively – we’ll be successful,” Persell said Monday by phone. Persell liked the execution the Spartans (0-1) showed on offense Aug. 29 during the first half of their 49-22, season-opening road loss to Harrisonville. Specifically, they “executed really well” during their opening possession of the livestreamed Missouri River Valley Conference interdivisional tussle, he said. That possession resulted from the defense making a fourth-down stand deep in Richmond territory. The offense responded by staging a nine-play, 92-yard scoring drive, capped by Brice Dome’s 34-yard TD reception from Jacob Lieberknecht on a catch-andrun play about midway through the…