"This horse, he just keeps bringing it," trainer Bob Baffert said. "He's just a great horse."
With a record crowd of 60,983 cheering him on Sunday at Monmouth Park, American Pharoah came out of the final turn with a clear lead and cruised to a 2-length victory while Espinoza barely moved a muscle.
"He ran like a champ," Espinoza said.
After winning the Kentucky Derby, Preakness and Belmont Stakes to become the 12th Triple Crown winner and first in 37 years, American Pharoah's return was greatly anticipated. Fifty-seven days after the Belmont, the 3-year-old son of Pioneerof the Nile looked better than ever in his eighth consecutive victory.
"That was nerve-racking," Baffert said after his eighth win in the Haskell, five more than any other trainer. "I was getting pretty nervous."
Sent off at odds of 1-10, American Pharoah became the shortest price winner in Haskell history, returning $2.20 for a $2 win bet.
Keen Ice rallied for second at 18-1 odds, followed by Upstart, Competitive Edge, Top Clearance, Dontbetwithbruno and Mr. Jordan. The winning time for the 1-mile race was 1:47.95 -- 0.95 seconds off the Haskell record.
American Pharoah's next start is now the biggest question in racing. There's no answer yet, but options include the Travers at Saratoga on Aug. 29, the Pennsylvania Derby on Sept. 19 and the Awesome Again at Santa Anita on Sept. 26.
"No clue," owner Ahmed Zayat said when asked about his colt's next race. "We're going to enjoy this moment."
If all goes according to plan, American Pharoah will run his final race in the $5 million Breeders' Cup Classic at Keeneland in Lexington, Kentucky, on Oct. 31. Then he's headed down the road to the breeding shed at Coolmore's Ashford Stud.
A few minutes after Bruce Springsteen's "Born to Run" blared over the speakers as the horses walked onto the track, American Pharoah broke well from post No. 4. But it was Competitive Edge who took the lead. Espinoza kept his horse in second until the far turn. And then, American Pharoah took off and was all alone in the stretch.
The final margin was deceptive because Espinoza never asked American Pharoah to run any harder than necessary.
"It was pretty easy," said Espinoza, who is unbeaten in eight races as American Pharoah's jockey. "For me the key was just coming out of there running. I knew that other horse would want to take the lead, so I sat back just a little bit. I never like to go head and head with another horse, so I sat back maybe half a length behind. He did everything by himself. It was pretty easy, pretty impressive."
American Pharoah followed many of his Triple Crown colleagues by winning his first start after three grueling races in five weeks. Of the 11 others, seven won in their return and one, Count Fleet, was retired after the 1943 Belmont with an injury.
American Pharoah opened his career with a loss before reeling off eight in a row -- seven of them Grade 1 races. With the $1.1 million payday in the Haskell, his career earnings soared to $5.6 million.
As he was led back to the winner's circle, the cheers continued.
"I couldn't believe the crowd, how loud it was," an emotional Baffert said, his voice breaking. "It was a great crowd. I love bringing my horses here. Thank you for being behind Pharoah the whole way."
The long day at Monmouth Park began with gates opening at 9 a.m. and fans strolling into the Jersey Shore track after waiting in line for hours, some since 5 a.m. But it wasn't until late afternoon until the place looked packed.
When American Pharoah was led into the paddock, the crowd stood 15 deep around the railing, straining to get a cellphone photo of the colt. And the horse came through with a truly remarkable performance.
"It's very rare that I'm speechless, but I am extremely proud," Zayat said. "I couldn't be happier that this is happening in the great state of New Jersey. This is a superstar. He has touched everybody's heart."
The Haskell win gave American Pharoah an expense-paid berth in the BC Classic.
The previous Haskell record crowd was 53,368 in 2003, when Derby and Preakness winner Funny Cide finished third behind Peace Rules.
The Associated Press and ESPN Stats & Information contributed to this report.
Jockey Victor Espinoza guides American Pharoah to an easy win in the Grade 1, $1.75 million William Hill Haskell Invitational at Monmouth Park on August 2, 2015.
Baffert: 'It felt like the Belmont again'
Trainer Bob Baffert discusses the emotions he felt when American Pharoah won the $1.75 million Haskell Invitational in New Jersey.
Ride along with American Pharoah
Check out what it's like to ride with American Pharoah while doing a lap with a Go Pro camera.