Take Your Daughter to Work Day is a fun professional tradition in many parts of the West, but rarely does it involve head-to-head competition, towering oxers, and a race against the clock. For Lucy Deslauriers and her father Mario Deslauriers, however, riding off in one of North America’s major grand prix competitions is really just another day at the office.

Yesterday, Lucy once again bested a field of veteran competitors in the $86,000 American Gold Cup Qualifier CSI4*-W, presented by Windsor Show Stables, aboard her longtime partner, the 12-year-old Belgian Warmblood, Hester.  The 18-year-old had to beat out the likes of Beezie Madden, Adrienne Sternlicht, Ali Wolff, Catherine Tyree—and yes—her father Mario Deslauriers aboard the 8-year-old Holsteiner mare, Bardolina, to top the podium. Her final time of 37.66 just edged out Madden and the 11-year-old SLS stallion, Breitling LS, who took second.

“I’ve had [Hester] for almost four and a half years. I started riding him at Old Salem Farm when he was 8 years-old and when I was coming out of the Children’s Jumpers. He was a horse we had gotten earlier in the year for my father and I needed a horse to do the Low Juniors on, so we just gave it a try and he’s been incredible. I think my dad’s been super generous and loves to see our partnership grow, and he’s just happy that we can all do it together,” Lucy said.

Compounding the drama? Lucy’s mother (and Mario’s wife) Lisa Deslauriers is listed as Hester’s owner, meaning the whole family had a stake in the yesterday’s jump-off action.

After the class, Lucy told the American Gold Cup’s Catie Staszak that compared to the rest of the field, she was actually less concerned about her father’s horse, given the mare’s relative inexperience. “My [Dad’s] horse is a younger mount, she’s only 8 years old, so I know he might not have gone as fast as he would on a more experienced mount,” Lucy said, laughing. “I had that little bit of knowledge behind me, so I wasn’t too worried.”

“To be honest, this win doesn’t really mean that much going into Sunday,” she continued. “It’s going to be a lot bigger, more careful, and the hill is going to be hard to ride on…It’s going to be a new day and my horse is going well, so I just have to keep it up, hopefully.”

A win in Sunday’s $216,000 Longines FEI World Cup Jumping New York would bring Lucy one step closer to one of her career goals, which, coincidentally, also involves a bit of family rivalry. “My father has always aimed high in his own career, and he has instilled the same in me, Lucy said in her recent NF Style Master Class.

“Whether it is trying to beat his record of being the youngest rider to ever win the World Cup Finals [at 19] or jumping in my first five-star grand prix, his motto is simple: ‘You can’t get there if you don’t try.’”

Now in its 47th year, the American Gold Cup features five days of world-class equestrian competition, including the $216,000 Longines FEI World Cup Jumping New York for the American Gold Cup on Sunday, September 17. Live daily coverage is available on the event’s website and will be broadcast on NBC Sports on Friday, September 22 at 11 p.m. EST.