The only reason the Blaine Gabbert-to-49ers trade made any sense is that you had to give San Francisco the benefit of the doubt. The 49ers are one of the best-run organizations in football, with one of the deepest rosters in the NFL, must have seen something in him to give a sixth-round pick for the former Jaguars first-round bust.Well, after Thursday night's 49ers preseason opener, Jacksonville must have been having a good laugh. They have to feel pretty good about getting a sixth-rounder for Gabbert.Gabbert was not good for the 49ers in relief of Colin Kaepernick. Gabbert was 3-of-11 for 20 yards, a robust 1.8 yards per attempt. Kaepernick threw one pass and had 17 yards. Gabbert threw an interception in which he stared down his receiver. Josh Johnson took over in the third quarter. Johnson immediately lost a fumble, so the 49ers have to be feeling confident about their depth behind Kaepernick after the preseason opener.[Smack talk season is back at Yahoo Sports: Sign up and play free Fantasy Football!]During the second half of the 49ers-Ravens game, "Blaine Gabbert" was the top trending topic on Twitter, and it's not because a lot of people were reminiscing about his Missouri...