Little confused on why this was split

Im normally a Pot Limit Omaha player, but since I was going to be playing mostly live H/L games I decided to refesh my memory On all the little quirks in the game, I do not understand why I didnt scoop this pot, can someone please look at this pot and explain why I didnt have the better Low, thanks.

PokerStars Game #2859875632: Omaha Hi/Lo Limit ($0.50/$1.00) - 2005/10/21 - 20:40:12 (ET)
Table 'Laetitia IV' Seat #8 is the button
Seat 1: babs7 ($24.75 in chips)
Seat 2: Warbird76 ($6.75 in chips)
Seat 3: hognosesr ($11.75 in chips)
Seat 4: bballwiz ($22.50 in chips)
Seat 5: miamiheat ($4 in chips)
Seat 6: IUSSigKap ($6.75 in chips)
Seat 7: assasin2B ($8.50 in chips)
Seat 8: Pati_Pato ($18.75 in chips)
Seat 9: NetFaceNick ($18.50 in chips)
Seat 10: mecarollee ($13.75 in chips)
NetFaceNick: posts small blind $0.25
mecarollee: posts big blind $0.50
*** HOLE CARDS ***
Dealt to bballwiz [9h Ad 4c 9c]
babs7: folds
Warbird76: calls $0.50
hognosesr: folds
bballwiz: calls $0.50
miamiheat: calls $0.50
IUSSigKap: folds
assasin2B: folds
Pati_Pato: raises $0.50 to $1
NetFaceNick: folds
mecarollee: calls $0.50
Warbird76: calls $0.50
bballwiz: calls $0.50
miamiheat: calls $0.50
*** FLOP *** [5c 6c 7d]
mecarollee: checks
Warbird76: checks
bballwiz: checks
miamiheat: checks
Pati_Pato: bets $0.50
mecarollee: folds
Warbird76: calls $0.50
bballwiz: calls $0.50
miamiheat: folds
*** TURN *** [5c 6c 7d] [Tc]
Warbird76: checks
bballwiz: checks
Pati_Pato: checks
*** RIVER *** [5c 6c 7d Tc] [7h]
Warbird76: checks
bballwiz: checks
Pati_Pato: checks
*** SHOW DOWN ***
Warbird76: shows [4h 3d 2h Jc] (HI: a straight, Three to Seven; LO: 7,6,5,3,2)
bballwiz: shows [9h Ad 4c 9c] (HI: a flush, Ten high; LO: 7,6,5,4,A)
Pati_Pato: mucks hand
bballwiz collected $3.25 from pot
Warbird76 collected $3.25 from pot
*** SUMMARY ***
Total pot $6.75 | Rake $0.25
Board [5c 6c 7d Tc 7h]
Seat 1: babs7 folded before Flop (didn't bet)
Seat 2: Warbird76 showed [4h 3d 2h Jc] and won ($3.25) with HI: a straight, Three to Seven; LO: 7,6,5,3,2
Seat 3: hognosesr folded before Flop (didn't bet)
Seat 4: bballwiz showed [9h Ad 4c 9c] and won ($3.25) with HI: a flush, Ten high; LO: 7,6,5,4,A
Seat 5: miamiheat folded on the Flop
Seat 6: IUSSigKap folded before Flop (didn't bet)
Seat 7: assasin2B folded before Flop (didn't bet)
Seat 8: Pati_Pato (button) mucked [Kc 8s 5s Kd]
Seat 9: NetFaceNick (small blind) folded before Flop
Seat 10: mecarollee (big blind) folded on the Flop

I had an A4 and he had 23, I thought that would mean i would win, just wondering im someone can explain thanks.