Sergiy and another tennis player, Alex Bogomolov Jr., visited the Children's Hospital in St. Petersburg on Wednesday, bringing smiles to the faces of some children suffering from leukaemia.
The pair, who are in town to contest the St. Petersburg Open, spent over 60 minutes at the hospital and participated in a number of activities, including cartoon drawings, playing mini-table football and giving the kids gifts.
"It is never nice to be in hospital no matter how old you are," sympathised Stakhovsky. "So it was nice for us to be able to come here and put smiles on their faces."
Bogomolov Jr., added: "Coming here as a father and seeing the kids suffering from leukaemia...
Sergiy, currently No, 64 in the ATP World Tour rankings, has been knocked out of the St. Petersburg Open on Monday as he lost 6-3, 7-6(7) to the 2004 titlist and a two-time runner-up Mikhail Youzhny of Russia. The match lasted one hour and 37 minutes.
One break of serve was enough for Youzhny to take the first set, in which he converted the only break point opportunity that came his way. The second set saw the two break serve twice each, but it was the Russian who claimed the tie-break 9-7.
Stako is now 10-5 at this indoor tennis tournament and also 24-26 on the season.
Sergiy went out of the Kremlin Cup at the first hurdle in a 6-2, 6-4 loss to qualifier Michael Berrer of Germany on Tuesday.
In a match that lasted one hour and 15 minutes, Stako dropped service three times and squandered all four break point chances he had throughout the match.
With this loss, Stako fell to a 24-25 mark on the season.
His next stop is the St. Petersburg Open, an ATP World Tour 250 event. In 2009, he won this tournament, beating Horacio Zeballos in the final.