Sophomore Lopini Katoa and walk-on Tyler Allgeier say they can be the workhorse running backs BYU needs, but the search goes on away from spring practice

FILE - In this Sept. 29, 2018, file photo, Washington linebacker Ben Burr-Kirven (25) tackles Brigham Young running back Lopini Katoa (4) during the first half of an NCAA college football game, in Seattle. Burr-Kirven is No. 2 in the country in tackles heading into Friday’s Apple Cup against No. 7 Washington State. (AP Photo/Ted S. Warren, File)