The Tennessee Titans are 0-2 on the road and 2-0 at home following last Sunday's 27-3 victory over the Cincinnati Bengals. Their latest performance was a complete reversal of the one that preceded it, right down to the fact that they reversed the score (they lost 27-3 at Cleveland in Week 3). So, what do we know about the Titans after four games? ... Nicholas Petit-Frere was one of multiple NFL players whose gambling-related suspension was reduced to four games last week from the original six. As a result, last season's starter at right tackle is back on the practice field and is eligible to play this Sunday at Indianapolis. It is possible, though, that if he is back in the lineup, it will be at a different spot given how well Chris Hubbard, who wasn't signed until after the start of training camp, has played in his place. ... Another player who might be back in action this week is second-year wide receiver Kyle Philips, who spent the first four weeks on injured reserve. Philips' addition to the attack was highly anticipated a year ago, but injuries have kept him out of action for the majority of his NFL career to date. ... Indianapolis' rookie quarterback Anthony Richardson presents a unique challenge for Tennessee's defense this week. Richardson's ability to run and questions about his proficiency as a passer will dictate a specific, less aggressive approach from Jeffery Simmons, Denico Autry and the rest of the defensive front. But in this case, less from the pass rush ultimately could mean more.