Stephens went into Australia ranked No.38 and came out No.17 - she went 10-3 in the four-week swing, reaching the quarterfinals of Brisbane and the semifinals of Hobart and the Australian Open.
Seeded No.16 in Doha this week, Stephens needed just 63 minutes to get past Anna Tatishvili, 62 62.
"I felt good," Stephens said. "I hadn't really been serving since my ab was a little sore recently, so I didn't serve that great today. And actually last weekend I got like a stomach virus or something like that, I don't know what I had - but other than that it was good today. I'm just happy I can play now."
Stephens talked about whether her mentality has changed on the court since her phenomenal results in Australia. "I just go out there and do the same things as I did the first week of Australia, second week, even third week," she said. "I just have to go out and play. You start thinking about all those other things and it's just going to make you crazy. So I just try to go out and play. Who knows.
"I hadn't played since Melbourne, so coming out and playing a good player today, I just had to play my game. I just had to play solid. And that's what I'll try and do for the rest of the tournament."
"The first week at home was tough," Stephens said. "Everyone was like, 'Oh my God, I want to see you.' When I was on Ellen, it was really weird. Of course I had people tweeting me and stuff. And I wanted to make time for my friends and see the people I was supposed to see. It was just really tough the first week, but then I was glad I was able to just stay at home for the first time in a while."
Also among the winners was No.9 seed Marion Bartoli, who rallied from 5-2 down in the first set and a break down in the second set as well to win a two-hour marathon with Francesca Schiavone, 76(5) 63. It was a personal triumph for Bartoli, who had lost five of the pair's previous six encounters.
"The first set was extremely tough - I think we went for an hour and 20 minutes, which is extremely long for just one set," Bartoli said. "It was a hard battle. I knew coming from indoor clay I wouldn't play my best tennis for the first 30 minutes. And she played really well at the beginning of the match, all credit to her. But I felt I really fought hard and didn't show any frustration - I just kept trying and trying.
"We had some great rallies. It was quite an entertaining match."
Three other seeds - No.11 seed Nadia Petrova, No.15 seed Roberta Vinci and No.17 seed Lucie Safarova - advanced, but No.12 seed Maria Kirilenko was forced to retire in the first set against qualifier Ekaterina Bychkova due to a shoulder injury. Other winners as the first round wrapped up were Ekaterina Makarova, Klara Zakopalova, Hsieh Su-Wei, Sorana Cirstea, Urszula Radwanska, Christina McHale, Monica Niculescu, Romina Oprandi, Daniela Hantuchova and Timea Babos.