"Junior Club" was founded in 1906 by initiative of Father Camilo Crivelli, who was in charge of the local church by then. In 1908 Pablo Alexanderson, who lived in San Pedro de los Pinos, a small village in the outskirts of Mexico City, bought the club and mainly used it for the practice of tennis and baseball although football continued to being practised. In 1915 the football squad enrolled into the Primera Fuerza, the only organized league at that time. The club was finally admitted in 1917 under the name "Club Junior México". In order to build a competitive club, players from all society and races were signed by Junior. The club played its first tournament in the 1917–18 season. Junior finished 4 among 6 other clubs with a record of 4 games won,1 draw, 5 losses scoring 11 and along 11 goals for a total of 9 points in 10 games played. Junior also finished 7 points behind the championPachuca. In the 1919–20 tournament the club changed its name to "Tigres Mexico" in order to attract the Spanish community in Mexico City. The club this time finished in third place with a record of 5 wins, 5 draws, 2 losses with 13 goals scored allowing 11 for a total of 15 Points tying in points with Centro Unión 6 behind the champion Club España. The club played its last tournament in the 1920–21season, finishing 2nd overall with a record of 10 victories 2 draws and 1 loss. The squad scored 23 goals and conceded 12 for a total of 22 points in 16 games. Junior also obtained its best record and place just 6 points behind the champion Club España who would go on to dominate the league for the next 20 years. After this, the club disaffiliated from the league. After leaving the league, Junior continued playing tennis and other sports with football being practised at amateur level only.
Primera Fuerza campaigns
Year
Pos
GP
W
T
L
GS
GA
PTS
1917–18
4
10
4
1
5
11
11
9
1918–19
3
12
5
5
2
13
11
15
1919–20
2
16
10
2
4
23
12
22
In the 1917–18 tournament the club played under the name of Junior club Mexico. From 1918-1920 the club played under the name of Tigres Mexico.
