The first named crew is on the Oxford (far) Station
137) Walbrook────────────┐
│ Marlow (Parker)
135) Maidenhead (Miller)─┼─────────────────────────┐
│ 3:56 2 1/2 lengths │
136) Marlow (Parker)─────┘ │ Barn Elms
├─────────────────────────
140) Barn Elms───────────┐ │ 3:59 2 1/2 lengths
│ Barn Elms │
141) Marlow (Sangster)───┼─────────────────────────┘
│ 3:53 3 lengths
142) Maidenhead (Bowyer)─┘