We can create a participant query with the following information.

Events, Event Name equals (name of event)

Events, Event Name
Participant Information, Name
Constituent, Constituent ID
Sponsoring Pledges, Constituent Name
Sponsoring Pledges, Pleadge Amount
Sponsoring Pledges, Amount Paid
Sponsoring Pledges, Balance
Sponsoring Pledges, Linked Gifts, Gift Date

To see only sponsoring pledges please set the following for your criteria.

Events, Event Name equals (name of event)
AND Sponsoring Pledges, Pledge Amount not blank.