The Baggies front man admitted that it was 'very strange' to face off against his former club but is happy to have picked up three points and the 'bragging rights'
Long came into the game as a second-half substitute and was instrumental in setting up Romelu Lukaku who scored the only goal of the tie to ensure victory.
“It was very strange,” Long told the club's official website. “When the fixtures came out, [the Reading game] was the game I looked for first."
He continued: “The Reading fans were singing my name but then I had to come on and try to beat them. I'm sure they'll do well this season and I hope they do.
"I'm still friends with a lot of the lads and the coaching staff. But it's bragging rights at end of day," he said.
The Republic of Ireland international also paid tribute to Reading boss Brian McDermott, who 'stuck by' the striker when he hit a low ebb at the Madejski Stadium.
“When [Brian McDermott] got the job, I was struggling, I wasn't playing well, but he stuck by me and I managed to score nine or 10 goals at the end of that season," said Long.
“At the start of the following season, I scored one in 13 and he still stuck by me, but I finished with 25 in total," concluded the striker.