Kevin Blackwell's side followed up the victory in Hungary on Monday with another fine display against the Belgian second tier outfit last night.
Billy Sharp and Danny Webber both scored for the second consecutive game and David Carney also found the target, but Sun Jihai's debut did not go to plan.
Introduced as a second half substitute for Michael Tonge, the Chinese international lasted just 19 minutes before being sent-off.
A couple of late challenges prompted Belgian referee Joeri Van De Velde to show two yellow cards to Sun, who was signed earlier this month following his release from Manchester City.
"Sun was just too keen to impress," Blackwell said after the game.
What do you think? Post your comments below."He was a little late in a couple of tackles, although there was no malice involved. With it being a friendly, I would have liked the referee to have asked us to take him off, but we have to accept his decision, that's football."
Otherwise, the Blades chief was happy with the performance.
All 22 members taken on the tour have now been in match action, including Sheffield youngster Kyle Naughton, who played a full 90 minutes at right-back, He and his fellow defenders were kept busy early on as the home side settled quicker.
On a dry pitch, Ian Bennett saved from Sebastien Dufoor and Matt Kilgallon deflected a Mike De Silva effort wide.
United quickly found their feet and Sharp was involved in a lot of the early action before opening the scoring. After Greg Halford's long throw was allowed to bounce in the penalty area, the homegrown striker turned quickly before beating Ronny Schuermans.
Home goalkeeper Schuermans was forced to tip away a lofted effort from Halford, whilst just after half-time Tonge's effort came back off a post.
Tienen levelled when Ugo Ehiogu headed past his own goalkeeper when the United defence was stretched from substitute Davy Peeters' right-wing cross.
The Blades, however, were back in front just over 10 minutes later. Naughton and Lee Hendrie helped to switch the ball from right to left and Carney cut back inside before shooting into the bottom corner, right-footed.
Following the Sun dismissal, Bennett made two important saves in the final minute, first tipping over from Mathieu Belme and then parrying away from Jochen Vanarwegen as Tienen looked for an equaliser.
The home side's hopes of a draw, though, were dashed in injury-time when Bart Vanhees was adjudged to have held back Hendrie. The referee pointed to the penalty spot and Webber beat Schuermans from the spot-kick to put the icing on the cake.
Tienen: Schuermans, Lunen-burg, Vanhees, Triantafillidis, Nys, Meeus, Penga Ilenga, Lacroix, De Silva, Konon, Dufoor. Subs: Van Impe, Vanarwegen, Bogaerts, Belme, Peeters, Vandeput, Vandecauter, Thijs.
Blades: Bennett, Naughton, Ehiogu, Kilgallon (Morgan 67), Armstrong, Halford, Speed (Hendrie 58), Tonge (Sun 58), Quinn (Carney 45), Hulse (Stead 45), Sharp (Webber 58).
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The full article contains 541 words and appears in Sheffield Star newspaper.