Boca Juniors beat San Lorenzo 2-0 on Sunday, September 20, in a rain-soaked clasico that closed out most of Fecha 10 of the Torneo Clausura. San Lorenzo played more than an hour with ten men after Manuel Insaurralde was sent off in the 31st minute for a tackle on Santiago Ascacibar. Leandro Lozano opened the scoring in the 57th minute on a counterattack, and Miguel Merentiel added the second from close range off a Lautaro Blanco cross, with both teams battling a flooded field for long stretches of the second half. The result moved Boca to second place in the tournament's annual table with 47 points, one point behind leader Independiente Rivadavia, while San Lorenzo remained 20th with 30 points.
Rosario Central beat Argentinos Juniors 1-0 the same day, with Ignacio Ovando heading in a Vicente Pizarro cross in first-half stoppage time to decide a direct clash for position atop Zone B. The win lifted Rosario Central to 46 points in the annual table, pulling within one point of Argentinos Juniors, as Independiente Rivadavia's 48 points at the top mean the leader cannot afford a slip with the rest of the table bunching up behind it.
The two results close out Fecha 10 of the Torneo Clausura, with the tournament's zone races and annual table both tightening as Argentina's clubs head into the next round.