But to what end is that a problem? After a poor first over, he bowled 16 overs for 16 runs. You can't write off centimetre-accurate medium pace on a Sri Lankan wicket that is doing a bit. That's most of their pace bowling history. Players like Vaas and Kulasekera have excellent home records. Mathews, Maharoof and Thushara too, if you count one dayers. It's only gentle stuff, but it often works.
Plus if you get a spell so miserly, it means the bowler at the other end can afford to attack more, or have an extra slip.
The question is who in the side is actually prepared to take advantage of that? Roach has shown some return on his talents, but Bravo, Benn and Shillingford seem to be between them a rather unpenetrative selection. It's a quandary no matter how long Sammy bowls himself, because you'd thing none are likely to turn a mere 1 run per over for too long either.