Why Sachin reacts on wife and mother and not in ground?

Why Sachin reacts on wife and mother and not in ground?
Because he represents India.

Sachin Tendulkar is not known
for showing his temper or angry reactions on the
cricket field, but at home he is a different person.
Many a time, his mother and wife are at the receiving
end of his occasional outbursts, the batting maestro
himself revealed at a function on Saturday.
Speaking after releasing a collection of poems penned by
his brother Nitin and a CD containing Marathi poems
written by his father late Ramesh Tendulkar, the
champion batsman said sometimes he does get angry on
the field.
"But you have to control your temper on the ground as
you are representing India. Sometimes I take out
frustration in the dressing room. Many times there are
situations when decisions go against you and the match is
lost. It has happened many times, but I don't need to
take the name of umpires," the 37-year-old veteran of
177 Tests said.
Asked whether he fears his mother or wife's temper, the
master blaster said actually they fear his anger.
"I don't react on the ground. But I give vent to my
feeling at home."
Tendulkar, who at times became emotional, recalled his
formative years in Shardasram School at Dadar and
thanked his aunt and uncle with whom he stayed for a
few years.
"I would stay with my aunt and uncle at Shivaji Park
when I was in VIII standard as otherwise I had to change
two buses in the morning to reach the school from my
residence at Bandra. Going to school and practising
cricket was tiring."
"I used to get exhausted sometimes and sleep without
taking food. I will never forget what they did for me.
They fed me while I felt sleepy and also massaged my
feet. I take this opportunity to thank them," he said in an
emotionally-choked voice.
Responding to reports about his proposed sortie in
Sukhoi as mooted by Indian Air Force, Tendulkar said it
would be a great honour to fly in the fighter jet.
"I have a passion for speed. In 1996, I sat in a fighter
plane in South Africa. I will definitely fly in Sukhoi. It
would be an honour," he said.
Asked whether he felt like writing poem while watching
stylish batsmen VVS Laxman and Brian Lara in action,
Tendulkar said, "I think their batting is poetry in motion
itself. You just sit back and enjoy. But the most
important thing I want to say is that I am son of a poet
and also brother of a poet."