Chip Leaders?
Heads-up tournaments are odd, with effectively each match being its own event and no-one else's progress of any concern to each individual pair (apart from the vague worry that in the next round you might get a match-up you're not keen on). But there are chip leaders at every table, and a few of them are:
Gus Hansen leading by 180k to 60k over Mark Everett
Andrew Feldman leading by 160k to 80k over Mori Eskandani
Amit Makhija leading by 188k to 52k over McLean Karr