The Facts: Following up on the ongoing story. ... Even before he worked out for the Broncos on Friday, Manning threw passes for the 49ers and underwent a physical exam earlier this week, according to league sources. Manning worked out for the 49ers on Tuesday night at Duke in Durham, N.C., with HC Jim Harbaugh and OC Greg Roman witnessing a passing session that a source told ESPN's Chris Mortensen was "very impressive."

Diehards Line:It was impressive enough that the 49ers sent a doctor to Durham to administer a physical exam to Manning on Wednesday. ... Meanwhile, when Manning is finished working out for the Broncos today and with the Titans in the next two or three days, Mortensen believes the process of football discussions, medical reviews related to his neck surgeries, physical workouts and parameters of a contract will be in place for the QB to make a decision on his next team. The Broncos, Titans and 49ers are in the running with Denver and Tennessee still the favorites. Miami and Arizona are no longer in the running. There is no known deadline for Manning's decision, but the process has been exhaustive since he was released by the Colts on March 7. Before Friday's visit with Denver, it was Manning who insisted upon working out for the teams, endorsing the integrity of the process. According to Mortensen, the majority of teams that were provided with the latest medical data, including their own physical exams and extensive quality video of Manning's throwing sessions at Duke, had informed the QB that it was not necessary for him to physically work out for them. While contract parameters have been discussed, extensive negotiations involving contract language also must be completed. Sources tell Mortensen that Manning will provide any team that signs him with appropriate financial protection in the event he suffers a setback related to his prior neck injuries. ... So again, stay tuned. There will be more.