[Getty Images]New boss Vitor Matos hailed Josh Tymon’s “brilliant” goal after Swansea City finally enjoyed set-piece success in their much-needed win over Oxford United.Swansea were the only Championship team not to have scored a set-piece goal in the league this season before the U’s came to Wales on Saturday.But Swansea wiped out the unwanted record when Marko Stamenic headed them in front from Tymon’s free-kick late in the first half.They swiftly scored a memorable second goal when Eom Jisung’s corner was only cleared as far as Tymon, who volleyed spectacularly into the top corner from 20 yards.”It was brilliant – I just hope he can do it again!” said a smiling Matos.”But yeah, brilliant goal. I think the goal is massive, but his performance was as well. He defended really good, stopped crosses, which is something massive especially in the Championship.”He balanced the team, he supported the attack, he found ways to go to the last third as well, so I think that Tymo did a really good game and I’m really pleased. “The goal was a really good goal, but it was the pinnacle of the performance, if you want to say.”[Getty Images]Swansea held on with relative comfort in the second half to claim a 2-0 victory which halted their five-game losing streak and gave Matos his first points as head coach in his third game in charge.Matos was aware of Swansea’s miserable set-piece record, adding: “That was something that we’ve analysed before.”We knew that we needed to improve set-pieces offensively. Scoring one and then one from second phase was quite important.”Swansea climbed a place to 20th thanks to their first victory in seven league games, though they are just three points clear of the relegation places as they prepare to face 22nd-placed Portsmouth on Tuesday.Matos says he is unsure whether Josh Key will be available to face Pompey after the right-back missed out against Oxford due to illness.