Sacchi had not been expected to pick either the Milan striker and the prolific Lazio marksman, Serie A's joint top-scorer this season, after the pair were consistently left out of Italy's qualifying campaign.
The squad, announced the day after the end of the Italian season, combines World Cup veterans Paolo Maldini, Alessandro Costacurta, Roberto Donadoni and Roberto Mussi with newcomers such as Del Piero, Fabrizio Ravanelli and Angelo Di Livio, key members of the qualifying squads.
Donadoni, who recently left Milan to join the New York-New Jersey MetroStars, is expected to return to Italy to begin preparations with the Italian team at Milan's training centre of Milanello on Saturday.
Chiesa, the 25-year-old Sampdoria striker, is the newcomer to the Italian side after earning his international call-up with 22 goals in his first season.
The Germany coach, Berti Vogts, produced no surprises when he named his squad. The Germans, who will be captained by Jurgen Klinsmann, are drawn in Group C against the Czech Republic, Italy and Russia.
The squad contains five players from the newly crowned German champions, Borussia Dortmund, and includes Matthias Sammer and Andy Moller, and seven from Uefa Cup finalists Bayern Munich. The Udinese striker Oliver Bierhoff was also included.
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