49ers WR dynamics: Purdy, Pearsall working to improve chemistry; Where's Bourne?

49ers Webzone - San Francisco 49ers quarterback Brock Purdy entered the season showing strong chemistry with wide receiver Ricky Pearsall. However, that momentum stalled when Purdy suffered a turf toe injury in Week 1, followed by Pearsall missing significant time due to a PCL injury sustained in Week...