Undrafted wide receiver Shemar Bridges generated some buzz Thursday night with his outstanding performance against the Tennessee Titans in the preseason opener, but it’s just part of his long journey to the NFL. The 6-foot-4, 207-pound rookie out of Division II Fort Valley State finished with four catches for 62 yards, including a leaping 38-yard catch and a 14-yard touchdown grab. Finally, the Ravens had a receiver who could make acrobatic catches and not fall down when he caught a pass over the middle, or bolt for the sidelines. But Thursday night was only a glimpse of Bridges’ potential.