Within the past week, the 49ers sent representatives to the pro days of Alabama, Ohio State, and Kentucky.

The 49ers own the No. 2 overall pick in the draft. If they hold onto that selection, there appear to be only three players who warrant serious consideration:

--Alabama defensive tackle Quinnen Williams met with 49ers general manager John Lynch and vice president of player personnel Adam Peters early in the week in Tuscaloosa.

--On Wednesday, Ohio State defensive end Nick Bosa had a late lunch with Lynch and Peters in Columbus.

--Two days later, Kentucky outside linebacker and edge rusher Josh Allen spent some time with 49ers area scout Steve Rubio, who also attended Ohio State’s pro day and dined with Bosa.

None of the top players worked out, each opting to stand on his marks from the testing at the NFL Scouting Combine in Indianapolis last month. Williams, Bosa, and Allen are scheduled to make visits to Santa Clara to meet with the 49ers before the draft.