The Blues were trailing 2-0 on Saturday lunchtime when the Frenchman was introduced in place of Alvaro Morata in the 60th minute.
It looks increasingly likely that the Blues will miss out on a top four finish and have to settle for a place in the Europa League for next season.
"We changed something in the second half and the difference was the approach and the will to fight. I have two good strikers and I try to make the right decision".
Giroud netted on either side of a goal from Eden Hazard.
Justin Bieber Punches Man Who Was Choking a Woman at Coachella Party
The man reportedly approached the woman, grabbed her by the throat and refused to let go despite demands from Bieber and a pal. The man, who was not named in the report, was seen screaming Bieber's name and trying to hit the vehicle.
"I think this is not my job to answer this type of question", Conte told reporters in Friday's pre-match news conference ahead of the trip to Southampton.
When interviewed by Sky Sports about his performances, the Belgian said: "For the last two months, no, because the results are not good".
However, on the day he was nominated for the PFA Player of the Year award, the Egyptian made amends in style to seal the three points 21 minutes from time when he looped a header over Begovic from Trent Alexander-Arnold's cross.
"The beginning of the game is not what we wanted, not what we expected, but in football you always have the opportunity to step up and bounce back". I work very hard, my staff work very hard, the players work very hard, and especially in this type of situation when there is great difficulty you must show [yourself] to be a man before a player.
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