The Facts: After a strong last week of OTAs and start to mini-camp, HC Jim Harbaugh and OC Greg Roman have been praising the work of second-year WR Jenkins. “[I] thought A.J. had his best week of football since he’s been a 49er the last four days of OTAs, which was the last week of OTAs, and he continues to build on that,” Harbaugh said. “I think anybody that’s gone from Year 1 to Year 2, there’s a great window of opportunity to improve in a fashion that you’ll never have again in your career. You’re going from doing things for the first time to everything you, do you’ve already done it. Big strides can be made that way.”

Diehards Line:As PFT's Curtis Crabtree reminded readers, Harbaugh was adamant last year when criticism abounded surrounding Jenkins that the Illinois rookie would eventually become “an outstanding player in the National Football League.” It certainly didn’t happen last season as Jenkins was active for just three games and was didn’t record a single catch. In fact, he was targeted only once. But with Michael Crabtree out with a torn Achilles and Mario Manningham still working his way back from a torn ACL, Jenkins is trying to take advantage of the extra opportunities in practice. If he does, a contributing role opposite Anquan Boldin could be his. Quinton Patton and Ricardo Lockette are in the mix. But Jenkins appears to be building an early lead.