my stats for the last four days

[Postiga]

$10+1 tourneys on Party

no. of tourneys 196

Fin in $ 41.33%

ROI 9.93

1sts 13

2nds 36

3rds 32

net $214

Ok, of the 49 times I got heads-up with my opponent, I only had the chip lead 5 times. I assume that I have to get more aggressive when play becomes 3-handed? This will mean more thirds though, so I have to get more aggressive before the money too i suppose.

BTW I can't figure out what ROI means. A poster helped me out earlier, but it still doesn't make sense. Return on investment-what 2 stats does it relate to?