Chelsea Trewella had no idea her boyfriend was planning to propose during the ninth annual Eagles Autism Challenge. However, Andrew Sulkowski surprised her with a special message popping up on a video board at Lincoln Financial Field.

Eagles Autism Challenge Raises $16 Million

The ninth annual Eagles Autism Challenge brought a surprised proposal, the Kelce family, and more during Saturday's event, which had 40,000 donors who raised $16 million for autism research.

Surprise Proposal After 5K Run

Chelsea Trewella and Andrew Sulkowski pose together after the Eagles Autism Challenge 5K run at Lincoln Financial Field on Saturday. Chelsea Trewella got more silverware than she expected after finishing the 5K at the ninth annual Eagles Autism Challenge on Saturday morning.

Trewella, 35, had beaten Andrew Sulkowski, her boyfriend of about two years, in the race. But before she could pick up her medal inside the concourse at Lincoln Financial Field, Sulkowski surprised her with a proposal.

Eagles Social Media Team Helps Coordinate the Proposal

The Eagles social media team helped coordinate it, pulling Chelsea and Andrew aside for a video interview about the Challenge. While the couple had their backs turned to the video board that faces the Pepsi Plaza, a special message popped up.

Sulkowski, 37, said he crafted the plan to propose to Trewella at the Eagles Autism Challenge three months ago. He said his original plan was to do it at the 50-yard line on the turf inside the Linc, where the finish line for the race was last year, but the natural grass surface installed for this summer's FIFA football tournament relocated the race's finish line to parking lot K and kept finishers off the field. Despite this change, the Eagles were able to help craft a proposal.

Shared Love of the Eagles

Sulkowski, a Cinnaminson native, said he and Trewella bonded over their shared love of the Eagles early on in their relationship, which made the Linc an ideal venue for him to pop the question. "This event means something to us, because it is the Eagles, and it's a great foundation. We love it. We enjoy it." The fact that the Eagles are part of this, in addition to their shared love of the Eagles, encourages both couples to appear on the show.