Portarlington young gun Riley Illingworth made a superb century to give his side the upper hand against Collendina in A2 Grade.
The Under 17s star made 105 from 127 deliveries to help the Demons post 9/283 on day one.
Illingworth hit six boundaries and five sixes while Cameron Gourley contributed 55.
It was a long day in the field for the Cobras, but they toiled away including Jack Every (3/65 from 15 overs), and slow bowlers Jacob Gasior (3/48 from 24) and Stan Grazotis (2/74 from 18).
Collendina posted 222 all out against Drysdale in C1 Grade.
Chris Thompson (60) and Jack Wood (59) formed the back of the innings for the Snakes while Byron Hansford made 22.
For the Hawks, youngster Oscar Cutajar took 3/46 from 11 overs and Troy Jones was particularly good with 4/23 from 17.
Drysdale had two overs to negotiate before stumps and did so successfully, being 0/11.
The C2 Cobras felt the full wrath of Tim Hester, who made an unbelievable 277 in Armstrong Creek’s mammoth 4/508.
Hester’s 277 came from just 192 balls with 33 fours and nine maximums while Trevor Piera made 127.
In D Grade, Collendina stayed on top of the ladder by beating Drysdale.
Craig Goodger and Craig Atkins each took three wickets in the Hawks’ innings of 9/129 and Jye Hearps made 52 not out with Dina passing the total five wickets down.