Chris Jones BBC rugby union correspondent at Allianz Stadium
Number 12 has been a problem position for England, with Owen Farrell - a fly-half by trade - so often having to man the fort there over the past decade.
But Steve Borthwick has suddenly got two viable options, with Dingwall and Ojomoh both emerging strongly this year.
SpencerMitchell 61', substituted for Mitchell at 61 minutes
Number
1
1, Genge
GengeBaxter 51', substituted for Baxter at 51 minutes
Number
2
2, Cowan-Dickie
Cowan-DickieDan 72', substituted for Dan at 72 minutes
Number
3
3, Opoku-Fordjour
Opoku-FordjourStuart 51', substituted for Stuart at 51 minutes
Number
4
4, Itoje
ItojeEwels 72', substituted for Ewels at 72 minutes
Number
5
5, Coles
Coles80', Yellow card at 80 minutes
Number
6
6, Pepper
PepperPollock 51', substituted for Pollock at 51 minutes
Number
7
7, Underhill
UnderhillT Curry 51', substituted for T Curry at 51 minutes
Number
8
8, Earl
Earl
Substitutes
home team, England
Number
16
16, Dan
Dan
Number
17
17, Baxter
Baxter
Number
18
18, Stuart
Stuart
Number
19
19, Ewels
Ewels
Number
20
20, T Curry
T Curry
Number
21
21, Pollock
Pollock
Number
22
22, Mitchell
Mitchell
Number
23
23, M Smith
M Smith
away team, Argentina
Starting lineup
Number
15
15, Mallia
Mallia
Number
14
14, Isgro
Isgro
Number
13
13, Moroni
Moroni
Number
12
12, Piccardo
Piccardo
Number
11
11, Delguy
Delguy
Number
10
10, Albornoz
AlbornozCarreras 9', substituted for Carreras at 9 minutesAlbornoz 22', substituted for Albornoz at 22 minutesCarreras 51', substituted for Carreras at 51 minutes
Number
9
9, Cruz
CruzMoyano 51', substituted for Moyano at 51 minutes
Number
1
1, Gallo
GalloWenger 61', substituted for Wenger at 61 minutes
Number
2
2, Montoya
MontoyaRuiz 67', substituted for Ruiz at 67 minutes
Number
3
3, Delgado
DelgadoRapetti 46', substituted for Rapetti at 46 minutes
Number
4
4, Petti Pagadizabal
Petti PagadizabalMolina 61', substituted for Molina at 61 minutes
Number
5
5, Rubiolo
Rubiolo
Number
6
6, Gonzalez
Gonzalez
Number
7
7, Kremer
KremerMatera 46', substituted for Matera at 46 minutesKremer 53', substituted for Kremer at 53 minutesMatera 65', substituted for Matera at 65 minutes
Number
8
8, Grondona
GrondonaOviedo 46', substituted for Oviedo at 46 minutes
SpencerMitchell 61', substituted for Mitchell at 61 minutes
Number
1
1, Genge
GengeBaxter 51', substituted for Baxter at 51 minutes
Number
2
2, Cowan-Dickie
Cowan-DickieDan 72', substituted for Dan at 72 minutes
Number
3
3, Opoku-Fordjour
Opoku-FordjourStuart 51', substituted for Stuart at 51 minutes
Number
4
4, Itoje
ItojeEwels 72', substituted for Ewels at 72 minutes
Number
5
5, Coles
Coles80', Yellow card at 80 minutes
Number
6
6, Pepper
PepperPollock 51', substituted for Pollock at 51 minutes
Number
7
7, Underhill
UnderhillT Curry 51', substituted for T Curry at 51 minutes
Number
8
8, Earl
Earl
Substitutes
Number
16
16, Dan
Dan
Number
17
17, Baxter
Baxter
Number
18
18, Stuart
Stuart
Number
19
19, Ewels
Ewels
Number
20
20, T Curry
T Curry
Number
21
21, Pollock
Pollock
Number
22
22, Mitchell
Mitchell
Number
23
23, M Smith
M Smith
away team, Argentina
Starting lineup
Number
15
15, Mallia
Mallia
Number
14
14, Isgro
Isgro
Number
13
13, Moroni
Moroni
Number
12
12, Piccardo
Piccardo
Number
11
11, Delguy
Delguy
Number
10
10, Albornoz
AlbornozCarreras 9', substituted for Carreras at 9 minutesAlbornoz 22', substituted for Albornoz at 22 minutesCarreras 51', substituted for Carreras at 51 minutes
Number
9
9, Cruz
CruzMoyano 51', substituted for Moyano at 51 minutes
Number
1
1, Gallo
GalloWenger 61', substituted for Wenger at 61 minutes
Number
2
2, Montoya
MontoyaRuiz 67', substituted for Ruiz at 67 minutes
Number
3
3, Delgado
DelgadoRapetti 46', substituted for Rapetti at 46 minutes
Number
4
4, Petti Pagadizabal
Petti PagadizabalMolina 61', substituted for Molina at 61 minutes
Number
5
5, Rubiolo
Rubiolo
Number
6
6, Gonzalez
Gonzalez
Number
7
7, Kremer
KremerMatera 46', substituted for Matera at 46 minutesKremer 53', substituted for Kremer at 53 minutesMatera 65', substituted for Matera at 65 minutes
Number
8
8, Grondona
GrondonaOviedo 46', substituted for Oviedo at 46 minutes